{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "349292695",
    "entityType": "Track",
    "nonce": "0x44be1536bc57069437baf76b3abab7e9decbfb6d01fed5547132d6ffb49d1906",
    "signature": "0xf708cab33ecb052216c3191f607c189671c3a3df583017b089f914706f73f3a024aa17febca931576d2257dce9238175ab8add31b24fdf1f49743e5f0f3a2ff61c",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}