{
  "manageEntity": {
    "action": "Save",
    "entityId": "134236494",
    "entityType": "Track",
    "nonce": "0x94618b8460fe6dcc8e51b57cbad8ed5b9894c595315b174d7afeb7904f6eb363",
    "signature": "0x223db6065212a42c24cf378726cdf5cd0eb3c065a7b15ce4dfdae1315c66d46346d4c2447297b058fc85440be7eff5b9770d5496e65e17038ea11d50d27ae00f1b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}