{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "688811946",
    "entityType": "Track",
    "nonce": "0x01d2fb7acefe1d6258c55458b26dbc2bc9d674369e02a34c607ea02d07a9805e",
    "signature": "0x0ac7a0484f2269a288dd4b0b12dbd6546147275c89e0ae9559ed9e9952a5caad684e4798505fda9d7b498580b3182e0d91ec44fde44a6298a467b8397c291f161b",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}