{
  "manageEntity": {
    "action": "Save",
    "entityId": "207624",
    "entityType": "Track",
    "nonce": "0xf26857c3bf3f0117b232d1c9a37ff668fa515272b3003e8ad30fde416a4aea7b",
    "signature": "0x2db22a4d19dca5e188d36da3818e68130aac2b5fe0c3fdf8ffa84417d4ae37635a48fcf8286a995fbaaddfdf3698ac57a4d74e0e4558af9b1159c79faaf9a1991b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}