{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "446739142",
    "entityType": "Track",
    "nonce": "0xf0921151ecc2b2b06c3a3d5635294f26bbe2120acfd5e30e06756986081f768d",
    "signature": "0x31f0d411b2ed3bd719b0ad3d4ca7e33f50eff8bbee2378dbaff4b3f7295a1c770b2e2a1475886ac7e8349c59f0c1467e753b5f9cae45901b0f8c8825be6a73551c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}