{
  "manageEntity": {
    "action": "Save",
    "entityId": "1684033962",
    "entityType": "Track",
    "nonce": "0x3de672b8091990f453a5ed5032884bab1c6e9fdbd191953bd10020b57e10de51",
    "signature": "0xaf4dc832043ed5f342385341d2bda1a4fad058fe255b4f1498fca2f345044ff612aa09bf4ab42fae16cb756621dd3fdd84f585c9b95db33e9a481fa825c8a4671b",
    "signer": "0xd14727622fa26ECD6Ad72cADB6b96823f5fb65DD",
    "userId": "173494086"
  }
}