What is wrong with this custom command sign? [duplicate]

When I try give myself my custom command sign using a command block, it says this:

[14:16:02] Data tag parsing failed: Unexpected token 'H' at: Honjo Masamune\\",Lore:[\\"The Honjo Masamune is the finest sword ever made.\\",\\"It was created by Masamune,the best swordsmith to ever live\\"]},AttributeModifiers:[{AttributeName:\\"generic.movementSpeed\\",Name:\\"generic.movementSpeed\\",Amount:40,Operation:1,UUIDMost:70725,UUIDLeast:981697},{AttributeName:\\"generic.attackDamage\\",Name:\\"generic.attackDamage\\",Amount:140,Operation:1,UUIDMost:84742,UUIDLeast:31325}],ench:[{id:0,lvl:120},{id:1,lvl:120},{id:2,lvl:120},{id:3,lvl:120},{id:4,lvl:120},{id:5,lvl:120},{id:6,lvl:120},{id:7,lvl:120},{id:8,lvl:120},{id:16,lvl:120},{id:17,lvl:120},{id:18,lvl:120},{id:19,lvl:120},{id:20,lvl:120},{id:21,lvl:120},{id:32,lvl:120},{id:34,lvl:120},{id:35,lvl:120},{id:48,lvl:120},{id:49,lvl:120},{id:50,lvl:120},{id:51,lvl:120}],HideFlags:7,Unbreakable:1}\"}}"

Here is the command I'm trying to use:

/give @p sign 1 0 {BlockEntityTag:{Text1:"{\"text\":\"Honjo Masamune\",\"color\":\"gray\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/give @p iron_sword 1 0 {display:{Name:\\"Honjo Masamune\\",Lore:[\\"The Honjo Masamune is the finest sword ever made.\\",\\"It was created by Masamune,the best swordsmith to ever live\\"]},AttributeModifiers:[{AttributeName:\\"generic.movementSpeed\\",Name:\\"generic.movementSpeed\\",Amount:40,Operation:1,UUIDMost:70725,UUIDLeast:981697},{AttributeName:\\"generic.attackDamage\\",Name:\\"generic.attackDamage\\",Amount:140,Operation:1,UUIDMost:84742,UUIDLeast:31325}],ench:[{id:0,lvl:120},{id:1,lvl:120},{id:2,lvl:120},{id:3,lvl:120},{id:4,lvl:120},{id:5,lvl:120},{id:6,lvl:120},{id:7,lvl:120},{id:8,lvl:120},{id:16,lvl:120},{id:17,lvl:120},{id:18,lvl:120},{id:19,lvl:120},{id:20,lvl:120},{id:21,lvl:120},{id:32,lvl:120},{id:34,lvl:120},{id:35,lvl:120},{id:48,lvl:120},{id:49,lvl:120},{id:50,lvl:120},{id:51,lvl:120}],HideFlags:7,Unbreakable:1}\"}}"},display:{Name:"Custom Sign"}}