{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x4419a1d62f778c5a144fc9b4bd7d23167606d2750d57833bcbd2192023e7173f",
    "signature": "0x713ae2fd22108edbc30dd5c8b17b0cc61f318f2df438d7fa15ff9f846aa1b12e25943fb760a386a423020e1c1b08ec1a4a2046c55cb748c7293aca79f9474c121b",
    "signer": "0x69DAeaBa091F0b0C82B0f54E9a01853b9fB11369",
    "userId": "306102391"
  }
}