{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330003",
    "entityType": "User",
    "nonce": "0x12e652631a6481acf3e4e31d3d370e4f2f4bd5257fd031f7ee306ae84b6c90cb",
    "signature": "0xfb0047846b17fe70a04b6176367ca070a6e7b451e43735ce4885effd1bd946c8310e2098b190f814b52701ee3b67f97062c831dbbd7b5a2420e45e03f2952e7f1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}