{
  "manageEntity": {
    "action": "Save",
    "entityId": "232173186",
    "entityType": "Track",
    "nonce": "0x495e8dc77598a0dcd7f813c9acf2da5aa23a2ae27076365d4f8a1e1925d647bb",
    "signature": "0x33348c41d31ae42e36dfbb0a7ad5fa837bcfb21f8797d93751562ab10076bfbf7a8745b529c7fb49d369add7d1ecbb91736bac6f43671886d9f49e00bc90f9c61b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}