{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "211955",
    "entityType": "Track",
    "nonce": "0xe12266cd6b9ad83f4ce2d3abfa7c67facc6b6076fe450912e2944af670083257",
    "signature": "0x5a89c93d6808d4b27bb9d547d1dfbd326bd40d1f6cb456c62d2d77e633937abf4810ea23af321221e05da289cb9891408a03222433fdea77f4ca13e1e59845851c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}