{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x75c37d5881d575c44f7fa41ce8084adcbc752e616760352b9d4cdd73f978be2d",
    "signature": "0x0d9cc1d8d2236e04572d0c8c5234fd257b2d01e171b5f6aa297d9a67e8a9a31d52d9eabed6dcd8b13bcc469dbd0f1fcde2c79e59388d7a05cf7dc6d24d20ebdb1b",
    "signer": "0x1f14fF6c245081DAEBc25bA0c5c8f4A0C40fbAb8",
    "userId": "310186398"
  }
}