{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "506789556",
    "entityType": "User",
    "nonce": "0x37a9d661b9ec2dc122ee6c7ca83bf2d0d4aa35d40c34b4240d3ee249d72f1f51",
    "signature": "0xb0d727dc6aeffc953b0ae57942dc1a4975d221b1e104e90b607d2d8eacc4b2935835b56f0c1dbacf69cf92885b41d3fc641230d495a4aba512ebd821ddcf477b1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}