{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73538",
    "entityType": "User",
    "nonce": "0xa87d4f950f47550f18fe3d40b90a1afd26d024ccd7eb7e3307ca4e32a5aaa5e3",
    "signature": "0xbbe96ee4089d01ace50401af14395148dc9ae095654e8de974116c8c3f5785357f6b14ac110d37c8a7087cc3521972c56ffee3f881bb2a1266e1fa39adcc5eed1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}