{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8fe86906a243f0ee5021a977b90fbb4255c4a31692004b4d0040874f1436f2cc",
    "signature": "0xe680e12e347cf2f3c7bfe727b9e7068780e0d66638bea6627c7b0accb917f0b33969be797ce0202d447b4ec9d5797e5fe623fa05dae2d06e0a3697b37cab68781c",
    "signer": "0xA797f2caD913188AfeB40F3A3959403B873EEd57",
    "userId": "882520020"
  }
}