{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964899801",
    "entityType": "User",
    "nonce": "0x819a57f539b82fa4eabb7abf4a60cd99751939018bd38eb4ff22e728cfe4aa15",
    "signature": "0xe997527220f46714ff4bb2dbe92e08455fede4cd0ba77e1b61abf26744dd005a5ebf017858cde0668a74343073bfe535c4259386e137f2f34fa68ace21babbe71b",
    "signer": "0x45C682dAb9Cd8ED5e055aC2F6a860Db5F14c27C9",
    "userId": "611525840"
  }
}