{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1908410684",
    "entityType": "Track",
    "nonce": "0xbd526e862dcba198300731da5a902c2f74df804771e6e19bfeee1675bfcfcf37",
    "signature": "0x5638832cc782758e60a218cb3a3cccc6c65ae3cda90637b355e223edfaafb9eb364636dbf4abe6fe84ed11aa38ae43631ec998eb71c5fe6baadd855b57cbe7f51c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}