{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306721",
    "entityType": "User",
    "nonce": "0x45dd178482c3f0551d85d3e0b3ad1024f7a8ea46d404da168b4cf8c74156d77b",
    "signature": "0x16674f7ddb1e48a1e27ccceb77698f066843ee12a84ee8d930403172a6bc19a730b631a58d078b5c8833d2eb0c1a96956f47b365748f7929661acae65e83284b1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}