{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "104186710",
    "entityType": "Track",
    "nonce": "0xfac1eb9ec66395ea1fb831170b4ba07da3910b6bbaf6c9a73d750242edd88c2c",
    "signature": "0x7416d3685abbdfc672ef7213c6c843abd91785224ade2742a42d8c375069dc394f9c3a5a2b3e8502af43a600ec26934dc59adab17420451020419e76c0adf1ae1b",
    "signer": "0x7Cd44Dc53B13eEA7335A000Ce36c05cDFE34b348",
    "userId": "355113"
  }
}