{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57723",
    "entityType": "User",
    "nonce": "0xfeaccc9cad3d46806b5f7e2e248f98e80463f5ba5b8f65e7e3a152347b85eacd",
    "signature": "0x0f5f025e26d3ad799c7a8f33458363211225e09e36922ea20199ce3aceb36c2f7ed015bff8d9c54d14baec8e2ca7e1e63c94dd1259a9ed1c4ac7bffef6d08bf41b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}