{
  "manageEntity": {
    "action": "Save",
    "entityId": "327990987",
    "entityType": "Track",
    "nonce": "0x565d8faecb045430b4e24a90e68b937cae2e5e687ef8003509fa20c9df650f2a",
    "signature": "0x9414ad7201c5672ec542a691626ab0bcc0a8f7e9dec1934db85fb43aec7966973abc5e145a3147e7d3a893d60e71a3d9a5d72819650917eda7bf5acd78924b501c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}