{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "882612345",
    "entityType": "Track",
    "nonce": "0xe4c5b8ebbc4b5bebd6a07e261e7ba23fecb26743f195ef16784ffe8fe14979c4",
    "signature": "0x3b001499bc3eefca8a37af9604de9c3c3aaccc94452f30531f9c204886a5ad751bf395d8646821dec272f717b8456c386cb1735e81bf1cdea7bad9ea74adf10d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}