{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x58773ec13d9d2ad7a4681d842a2279b71d9375de77cfa3760ff87acdcba16668",
    "signature": "0xb9c2bac6e14081568dd68da4c886ce2b3b73208c3f672bcc95d965122a4ada303a955a613350a59ad1342eb6edfcf7870e096ae3b57bb54d1c095a1dfb87eadc1b",
    "signer": "0x064F47ceA1BD6c7f4E75eEaF6208Ca039d0c2D01",
    "userId": "522902911"
  }
}