{
"manageEntity": {
"action": "Save",
"entityId": "530959024",
"entityType": "Track",
"nonce": "0x5a90150cc4b1f637f1f2ce96cf911e7f5082deb92df6a73bd353c3ba4014792c",
"signature": "0x79e202c0945f32b58108d92447826df24e3b554019a7263f07d50ce68ce4c426286d0db694797ddad8e329c3cbff3dbb1cd9ce23357152e613c4dbdcb668d2311c",
"signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
"userId": "490478463"
}
}