{
  "manageEntity": {
    "action": "Save",
    "entityId": "681650",
    "entityType": "Track",
    "nonce": "0x388fab3d631a34f13210f817819924b3532633352164a4d253ee6eb71dc27853",
    "signature": "0x2cd64cd66a8d24fa84c36ac8b4559ea586e72163d0d43324bc12d744911cbaa30f7cda105dccb823ed18f13c43a93b4df50ebb345cf0aa4acb08ccfc36a81cdc1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}