{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e02501bb65015361fb61645e39eb4a7fd7a27363cf94090c3ff48d65d46ee52",
    "signature": "0x3822edc4f5c0946caa148c2acc7c953a127e6a9c142b455a32b4e4543f82775b59e0f2c24d598433c9e9e9c3440d972a0818021c94b6b7322d55ce923116522a1c",
    "signer": "0x6ABeC6bBE57CCcb5414C4f1DF7397331b9828727",
    "userId": "750637079"
  }
}