{
  "manageEntity": {
    "action": "Save",
    "entityId": "165294",
    "entityType": "Track",
    "nonce": "0x746cddbce47f30873854e8bf1daba6ecf89178e0c51accf3203d71738d716cd0",
    "signature": "0xd4d21fbf8f6b07a2da410cbd3e7a40d3b4979f7e5016047657bd1e22da0bc88321e1925c1e1a5f036f2caa55ff55fb1e76729588b35e7effa20134384537f35d1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}