{
  "manageEntity": {
    "action": "Save",
    "entityId": "1960897973",
    "entityType": "Track",
    "nonce": "0xc17dfacd3a9b47022dca738adc00c63ddac0fda96ada25ed44fdcce1bb0b6e02",
    "signature": "0xecfe1820bec6083ca8f54dbf909034d1129809e56523b3c9f941aa5e2d9328626f207c7dcb93df6a7bc225d309211ca38f6e2d450a89ed69e4a1299258fe7f761c",
    "signer": "0x93430810882B6aE0B8d598F5378b6A3156D682B4",
    "userId": "412472630"
  }
}