{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb975a85ae461413f7caa3bd3cd89ae8080df2ec802e756fdff08157cad978134",
    "signature": "0x78caca8664b15eaa534fc1be66956a9f5b99d8ae9bf6fe373a9d49570e5232661ce359a1c1588e71c25b4c98451827dd3599306c7db847075045f034515510661c",
    "signer": "0xE00d35cDEf561168f54846Ecf996dD5dc728fF14",
    "userId": "702802703"
  }
}