{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "45881963",
    "entityType": "Track",
    "nonce": "0xec9ab2035eac6aac0f33fc4bc1ea8f12d3e7c52db7de19f16418ff7d8a23329f",
    "signature": "0xb5b8b0d35648ed045d497fe5a7e2508e6faa914118e473cef3edd951145ddf7b663bad77642d9aa447d66600013cc61bdfc71c22b88583829981f1982e491e7b1c",
    "signer": "0x229a981Eae98657c17Cc2a4827328E1877eA40C0",
    "userId": "281682"
  }
}