{
  "manageEntity": {
    "action": "Save",
    "entityId": "25344",
    "entityType": "Track",
    "nonce": "0x77433b595a5d4c9e98744fedc1e93824c8d6d1546ea49c7785ebeb04d1211483",
    "signature": "0x09e3b7e8b0b3d2590b8ea4e08e41f9103d3cb265a2fd26f39a96b61f09eb9e517665baa213927e910254cde3f9506205b0747277d3682d12aa4975cf2fc013961b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}