{
"manageEntity": {
"action": "Save",
"entityId": "1340524962",
"entityType": "Track",
"nonce": "0x40ec7e0329f8024d044c3f107e8d6249bdf8624bc52895a4b0cae26b9f33a1db",
"signature": "0xd117b18f29a38355991f14772498b61e3c87013b5561cd65545251c4194b0f5e4b2d9df4313333c308132704f5ac79c15f985c9fab21bd064fe40fbae299284d1c",
"signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
"userId": "854614078"
}
}