{
"manageEntity": {
"action": "Save",
"entityId": "888762256",
"entityType": "Track",
"nonce": "0x8d2c97138bdcb5dddeff76112f477bc625edd361d15a3bf5f3afd12e97a489ed",
"signature": "0x437767f39b4367271ea952e718b18f39872836012ae65a8cd366be224241d2584cf56c46664eaf2e3faeea2e8aa88a380e7d209a1442a62a2e4899ec28191b171c",
"signer": "0x6dFc659a97343F04dDFC6C31FE4E96E5aF714d2C",
"userId": "344720853"
}
}