{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x137d6e787817664887e2d94621d836f6bfd2c378c7f62861733da2cda954a482",
    "signature": "0xd0d024479ec1827017d38527c6781e3f593436eeed665b9c470beee5c5b17ea9424b7abd7bef02a1891232b196b4b601ff4e947ec9f209210de993fb895d7fec1b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}