{
  "manageEntity": {
    "action": "Save",
    "entityId": "1219007108",
    "entityType": "Track",
    "nonce": "0x3e8ca5128fe623ee5f9902b7d8d69055a6562df280319682b898873a28e3ec7f",
    "signature": "0x23e365fc05a22604f07153f3c6833b6492e189268e5c833de348105d009db0e605a8118e6e2627884f5e38aa0dc2b96e269f82db03046505b837d5c0c1ac23d61b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}