{
  "manageEntity": {
    "action": "Save",
    "entityId": "24419040",
    "entityType": "Track",
    "nonce": "0xbd45464992f3f040777e8cef6219f16e264de9982d988a6652dbf83a0747ebe5",
    "signature": "0xe9fa46ed95f88b9ff9651a0d7b30eb6decfbd53b7d7465e4f909dd59216e515d16a9a4e9c4988d64549c348e8df78139c893e192e84bde47b9fd3a6d7ab8e1131b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}