{
  "manageEntity": {
    "action": "Save",
    "entityId": "1760206493",
    "entityType": "Track",
    "nonce": "0x6ed04f343e39babcdea16f6aaafa7c6be244c29d16a377e33638fa3e770ce63f",
    "signature": "0xaa4d1f0a145f2631910442cd3e315038029856bb0613de66821407ec3fd878045cc40434a67400c4176b2b8e5187017a27965f02c31c15ae37df83cc56f2a6dd1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}