{
  "manageEntity": {
    "action": "Save",
    "entityId": "33047520",
    "entityType": "Track",
    "nonce": "0x6cbb59f2eb5f8aa2765ff7c56b6c0f531bdc07ee864186e7decf594f9d64ab12",
    "signature": "0x9e28a9856485ee8b9dd7be2793ccdd487a539bb9be4355196895fadea0b45b9458ee129c7e4f88fbbd7442e2987b279ca2203d861b4383e827a06301bb9951661b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}