{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "544965867",
    "entityType": "User",
    "nonce": "0xb2a4c6d58b4a42658725eb5e7d11e935198e64b495a8b10fb7000eb64b8f5181",
    "signature": "0xa8ad3b608db183879667efe8e33db8cea8e9f69172b3a8ac9abbe36caa3334736649bc77210ab379337084c2b5a9709aedb589c1cbea5fa0940eb3e0fb7182c71c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}