{
  "manageEntity": {
    "action": "Save",
    "entityId": "1280070086",
    "entityType": "Track",
    "nonce": "0x1f493d825405a009a0d7d585b46da8ffa29f2181b897a04ace5edb4eaad4f34e",
    "signature": "0x33a0e2b3f208630977ca11b67706543978b2d276674f901c4d73b74e2230574f4b8c8695b8ab99ede4741c105262fe01b0302d3e012c3113c57ace89c7f353c41b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}