{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371339529",
    "entityType": "User",
    "nonce": "0x81474942246eee1e3a3b15e0e074c54fddbdf265b37bf4a9cdcdd52128a6891e",
    "signature": "0x9d133fdb740e77acd840e89dab512300633985509adb9eb334d714246c6c938e56415591a1f3467eff79cc3c13d4e4e5ef3378df717621f17a7a5c6039b351701b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}