{
  "manageEntity": {
    "action": "Save",
    "entityId": "1653463028",
    "entityType": "Track",
    "nonce": "0xe3f2abac19746349c0efce6d3557bc401da931efa7a22d89b74497b274fafdb5",
    "signature": "0x8826d0ee8a6e2e226669b2fbb98269295511566dcf28d16269c89a05d3280f626c4ea92d2c058f8c0433da4e4955fc242049b0397cdf56ecd34f681ef7b78b491b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}