{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd3fdb3afd6f349cbf1139769f8bce8cdeaef4555c999afada81573b067cf3164",
    "signature": "0x70030a1f4f9da23debc4cd3026344ea9320a8987a8d006a4219591602a69876e19ea7733adb2d9e36b8a2b6066d0842a3432ce42848bb62807e37fdb599eac051c",
    "signer": "0xDa19B6942Cc72334c8B49706387DA1cA4A3D3903",
    "userId": "985247471"
  }
}