{
  "manageEntity": {
    "action": "Save",
    "entityId": "1625093787",
    "entityType": "Track",
    "nonce": "0x84761a6eb7b16477c5469888e1644f35df09e46bcf00937c51e1417da773b862",
    "signature": "0xebae346b9aeadcc585776386eedf25c6402149204f95a0979c7303f76cc67d5a2cdc4c9c5725e0b41fbb63acceaf740b194809a60dbf3d92879c2238089f86ba1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}