{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1639328586",
    "entityType": "Track",
    "nonce": "0x049f5785a973e28bc21385fb5c509ada8c3e91f4c2b1ca0f969cf502861a23c2",
    "signature": "0xbf6383b7db44c9c3cc2d59f73a32c5b0067a1d0727300addfb62f3bb761570bb726933e6f4cdc722402bb0b4190f15eed36e479c2e6cf4336b8c50dfe84788dc1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}