{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024024",
    "entityType": "Track",
    "nonce": "0x9fa9f107fb227a36129a21972fdbb65a0ce25bd897243b160aedc9da4456e9b6",
    "signature": "0x0c1d8df6429657b1470215d4ea1732df5bfce12cb3d2b917a2a2e029f8f2a04e00a627ddb023db96ba7a6216ebe602a2cd57b1a191ad89fafc717ff2c7191acd1b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}