{
  "manageEntity": {
    "action": "Save",
    "entityId": "1315524930",
    "entityType": "Track",
    "nonce": "0xf43516b3960d23c0b4784783ac88dc3f071b22a3bbc1bcce6864a231b3c73e48",
    "signature": "0x8f119a2fb14c1a49d530a48e8aad5c3a8782a17ab5070fa45d890e7429e4bc7133681f657d49f41594c9f5ee3620956891052ce4f08750191e01bca12a2a4b451b",
    "signer": "0xEDf1cBb4745c1De9c45721cDf7BF2a3ca47F5DB0",
    "userId": "75062"
  }
}