{
  "manageEntity": {
    "action": "Save",
    "entityId": "1679256456",
    "entityType": "Track",
    "nonce": "0x0ec852eebfda2de89316c83c71da383336b795b7697c6c08dc51bef9d653c90e",
    "signature": "0xe4f464924a891cc2bee3de87057b95680eadfa8025c73106bdd03d4b106f735067eb47ed7d440bced3192b874235fba6c0d919e48467853ac7a5956550f745ba1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}