{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "504377203",
    "entityType": "User",
    "nonce": "0xca495ccbdfbc9ce5c2256134363d4e410c11b427aa36255cb44a2dde6d6f6955",
    "signature": "0x41ff5da123d368895130a551f67f292b0e8dcd2cf00ac0522b4580fb66f89b4d10eda3f0fef0dcf61ef71bd78d4cc5a2ccd940fcf9a5cb396cd526dc7ffe35081c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}