{
  "manageEntity": {
    "action": "Save",
    "entityId": "1332335070",
    "entityType": "Track",
    "nonce": "0x414e1f3402057476084939eeb27452cc890c168e39df73c376a96c837ca3b373",
    "signature": "0x80e6027057a4d0497a16217d9358880638b821766fbe9a119f4bba35afe58fef60dfac804c6bce2d4d07a9b0107400a34005ddfe048cd9be93c6dbc30dd3a5de1c",
    "signer": "0x45F71057EBE532A4725471F179Af052B02F7E781",
    "userId": "16239942"
  }
}