{
  "manageEntity": {
    "action": "Save",
    "entityId": "63849355",
    "entityType": "Track",
    "nonce": "0xea5412abc5bc71e1eb624b1a7abba207ffd6dd46d21b361b1fb8461ad919d602",
    "signature": "0xc66ddf04c27ba485eafb5e9bcbe386cf7e8996d29fb4ee5b50c3ebf14bb6cf28608e4b3522c139b0a9e5d941594c5d16af6da12b129f2931364c05e0f758eb111b",
    "signer": "0x06Ad5789cE045C5B0AeB97849051a7385CA95B4a",
    "userId": "270209897"
  }
}