{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "506789556",
    "entityType": "User",
    "nonce": "0xb0a00de9586370590064b89d45dcfb7268b035740436dbde1256646a54142856",
    "signature": "0x704045bdfdd9352c5cb8c85b6f8aab3f96e374a868a7e82b4ce0b17f59a4284c5967ccd1bc43117821dbd4f605cbfe49d4bf188af63ad9b38c70c58fc3ce7bf31c",
    "signer": "0xf38FED4196DA5fD2C7D39701dF160e70fb644b63",
    "userId": "11198"
  }
}