{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400557881",
    "entityType": "User",
    "nonce": "0x3b33f74375c277a8c9749039dbeff6103c88b65af87d9bdd9d8f1ab4705a05b3",
    "signature": "0xb4b492e14bf2c8dde777175939e8bd2f6029fa258c2b49c9d8e8ced18cc368e403c2f17fe39f0c3f5f819b1ddfdf6fadc11fec48e115ba47c283da0f8bf151951b",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}