{
  "manageEntity": {
    "action": "Save",
    "entityId": "176853389",
    "entityType": "Track",
    "nonce": "0x5456c20633be2a8ffa3375d84f1df40da08350e8945cf927f2ca3f0f80325568",
    "signature": "0x0c626c169e9241b4de595a131dac5df0d83ca56554316afeb798413377b1c8f50571c14b0d106e3702c027212694eacf197bcb9a48075fb0536c8189a6d03c1b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}