{
  "manageEntity": {
    "action": "Save",
    "entityId": "430528191",
    "entityType": "Track",
    "nonce": "1786583202903790789",
    "signature": "0xdbeef4ca19a41645397c49ca55b769e0ebc1e37ed27d95220b66d62d091a86215861edcd39013299579318bb66e046aac1599b7e1b6ac89cb9c0a43bbe7d50d11b",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}