{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1250230433",
    "entityType": "Track",
    "nonce": "0x692fefd22befb5777fb50bbfdae28278af5ded52041f4eff195e325cc9147ed7",
    "signature": "0xe5d618f1f667c6e381faf2092dcbaa4995bbee519952e5ef604df1eff378be042668edef06f3ca940d75e05d69c379a27eef51c5801b31a1bcaa1b8cdf981c951b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}