{
  "manageEntity": {
    "action": "Save",
    "entityId": "1137701966",
    "entityType": "Track",
    "nonce": "0xee4f37c5ca21b0739caf983fc497c1e2dbe3a5472f8a980c0be89987409b32ec",
    "signature": "0x2b4962fbcdcabe612ae1660825bb873b3d10008c9286dc703dac789da90788085470efe83b6840920bab5543a09d297622bf49242736648c39f57198af7c87bf1b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}