{
  "manageEntity": {
    "action": "Save",
    "entityId": "9318376",
    "entityType": "Track",
    "nonce": "0x1dce993c95f7c7d46fe7237fa45c26bec44ee8e9810b5a31d2ce77e0299cd887",
    "signature": "0x308485c5a8b4458d10d5e1a6d8aaf64b94e192131b644f40fea2ab35ccf41a420136eaa04ad97cc6fbec2a7672f78263079ef13c660bc2141f6f13a8734a91861b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}