{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a2faf625350977a3f5a1e091fce01c8764939f78f3d7a06106822a9e4c46d32",
    "signature": "0xdeed62459bf4c8cc6ef0f543e028b14cc439082b1b7f48836108f9d59cab6eea53de325f76578cc55d8390e2f9c4f9be9562a57065880f4338b88e2edb8691741b",
    "signer": "0xFBdaC5CB215cb5C9002aaA83664FfDB0e20018cD",
    "userId": "447624565"
  }
}