{
  "manageEntity": {
    "action": "Save",
    "entityId": "2047714580",
    "entityType": "Track",
    "nonce": "0x8bf72b534e96a657b29744bb8de5cb0ab9d65d3d71478b83c97ec8c3129f49f9",
    "signature": "0x30c99ac5559f72bb5e66cbd0de196d6d5f1be193d13b110942f1bc8dc47fbbaf1872f12848e37be5772aad8a0c23da4927bdd7062e9d02e6f69c33926af292f61b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}