{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186045106",
    "entityType": "Track",
    "nonce": "0x6e0ff87963827ce55c9d770578d376276716271b8daea56675df0f72b5167367",
    "signature": "0x50673e9b60fad135dc8ed8983abcc4adfc9514c0d094a71fc690710f2660a30f5ca322a92751080f0bb61d51793b5f8b3845414cfafe5efcb61083449578e8d71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}