{
  "manageEntity": {
    "action": "Save",
    "entityId": "32845660",
    "entityType": "Track",
    "nonce": "0xa4222b8579cc72bcbcee429d6976cf23815eb61167a32c9884883a3ac09fa201",
    "signature": "0x25563bc28bfbbaabf875fb4a1a5f4425ed45322e34ec1cabd2078ee852f762c8068195281370d4889f59df0f25fa9ef1bcb62633e39d1182053b8122718c2b271c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}