{
  "manageEntity": {
    "action": "Save",
    "entityId": "121330",
    "entityType": "Track",
    "nonce": "0xbaa10e0fb20aa7b8bae3ed3b5846597e973a9108cf202515a4023348ebd6bc31",
    "signature": "0x15092c960c58e4ee2823af58e452a240b7eeaa1b2f8b6751466afde0b6cad21d5b2f05d7335fa4b982679ace776c900314f4f2ccdbb6e25b799a85c8f598d6591c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}