{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9d904378a42ba7b4c8169a76ce455f415d825e11d041ce2573d2424371034b8f",
    "signature": "0x14263e82d1854edfb253e7f81f557dfb637f945dfc0c375d6d6188aa575372fe1fb77ed7e886534755b131c0bbe2ccff4bcbf04f9ab652b21b6f2a73c254a0bd1c",
    "signer": "0x7b3BCF6f1c59D6704e4c2B36606a2AeB24333B47",
    "userId": "544402123"
  }
}