{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135644139",
    "entityType": "User",
    "nonce": "0xb7c68e0a82bba409977293e8d887fabae58688fb4794a7e4830e0c3039ad893d",
    "signature": "0x832fcb3222df6c4e81c11be18ea47bf1f73f7388d2935c7ef831dba78d3418e9402b79b79050e83333c29d474160816a30eb8970c768eadcc6155179d9fbbd461b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}