{
"manageEntity": {
"action": "Save",
"entityId": "1246007745",
"entityType": "Track",
"nonce": "0x078cedfefcfe76e984dfe3504eb730b96cf962a0c88a4c1a8ae3b9466ab9ea79",
"signature": "0x6dc654e452e36eaec0468ae9bf3ff0577ed81a5d7502ab27b00a08b4d8225e066eb1681f10c43d555716007c2c51dfdd86eb651b9b732ac511c8f2664042e4611c",
"signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
"userId": "989073793"
}
}