{
"manageEntity": {
"action": "Save",
"entityId": "1562882428",
"entityType": "Track",
"nonce": "0x8b59f11423a836cfa50a77f7bf6edcaa5837302e289a38b265845b4005878d0b",
"signature": "0x5461093087b98a28ededa62538c4cbaf53bab6efe702fa7f1fda48cf7c0eb92f0b4c4b114ef20ad0e2e939d477d8a2704a35a81039d91bb43545d5d4453f24641c",
"signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
"userId": "98311147"
}
}