{
  "manageEntity": {
    "action": "Save",
    "entityId": "76747226",
    "entityType": "Track",
    "nonce": "0xd9d4c630bbb041f0c663db5741d36c392240676e92e6140d4557d0c3289bbf10",
    "signature": "0x4705ca9b1e04602eace7d23c041b35677d98fd7832e37c8cfcf2db6eb87c6ffb673f6c5fb3cf22adabb4d79270918880be191b156b1c205b2a9700f729d67a301b",
    "signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
    "userId": "370091516"
  }
}