{
  "manageEntity": {
    "action": "Save",
    "entityId": "2044736029",
    "entityType": "Track",
    "nonce": "0x5b94e8b589506bfd32ca79902f49f258a15622fe92d4b43e0af2178754293759",
    "signature": "0x09c11451beac9e26e6bb612c9a0faac3014368e918f907244905fb153faf0af87ab25c3f2a31fa6f9fe9bbc9e03baab772da9960353ed595c1cd89b85c20f9591c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}