{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778583001",
    "entityType": "User",
    "nonce": "0xe5562fb1e9ad0d1cbc1350490ce879c7d1e6bdd2841d88dc6cc4f99e8cb068b9",
    "signature": "0x96e3aebf587c3119c33a7633d70fd2d743f8b5760adec90f27c2b573f126e4a25c349b08c98a94740e1278fffee1558763274367c81b711124db02564e59700f1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}