{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30390",
    "entityType": "User",
    "nonce": "0x5b578adc5d6bc06974959996345731dee6d97868c60313ae2828a06c71c0c495",
    "signature": "0x28aeb432cf840d2af1968ed807e98c243503389f7ae2ad3b8ccc4af832b9d5533b6e06768e8cef81a13e5a484151af82324c5af40ae611da42540cc323c2e9621b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}