{
  "manageEntity": {
    "action": "Save",
    "entityId": "51180",
    "entityType": "Track",
    "nonce": "0x44a5359e1d427f55e3105074dea5a970b8a766f4a7f2d184c5b2f857627bb0fa",
    "signature": "0xdb86d511bfe3f01ae594a6ac9117c43ff4029de1227f8c6fb6c9355e7e6ccdda070c12693b6ef53285fe996c430dbb08868203b827fc90dd019c8dcc45bfefe71b",
    "signer": "0xAaC77705f5f6bd787D8581c36Ddaf7c0c7AE3370",
    "userId": "827420993"
  }
}