{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x62a6a2c7bf0391635f0ea61a9ad5d1f39863bd61fcbf9f9f2afd2fb6580b0e4f",
    "signature": "0x23ee50a2ff768991fa7e567711b17e0e2360787b6ec6a14a16d7e29b580570467e4b3242df7d420be8a9c2303bb2578aac6031c0756c75ee1e3dfd1f5f74c0011c",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}