{
  "manageEntity": {
    "action": "Save",
    "entityId": "1613763010",
    "entityType": "Track",
    "nonce": "0x88575711dce903b90740ecd1d515178869a30c48ab12dcd113bc4b575185af6b",
    "signature": "0x0ea14e057d6630144e1f5c9436faf4e544f84b8d7133181b592f2d3e11b306c3192b898e6995c1b46b3fd8eea3e394f547657613a4e546b9211a05556e98aec31b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}