{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059710628",
    "entityType": "Track",
    "nonce": "0x7a3f2bba4bd3830d2dd0dc92d940c929e52eab4f244d667d1e9edbd8ad1fa1b7",
    "signature": "0x946c39456078b79e6ae8135c6e5a13f3fda5e95220e46bc570a7fd54e2309bca6ab024c03644ccb455a46e97b6e17ecb013e77b7649c34ce805fa83aafde8dac1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}