{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101222844",
    "entityType": "User",
    "nonce": "0x446c274a39a0b4b7265302a7b0757f22b2b61bbc71322cfb4ced256f286077cf",
    "signature": "0xe6a634d4eef6bf057405f6ccd799ff317f83d581df251c00d16d504e6780ff57065a15bbe0634a33221b634ba22d5bfdbee13e847112ff18ee3a0d491dfe968f1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}