{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "388940",
    "entityType": "Track",
    "nonce": "0xdac4c2d29ac998f933aa1f90a9ee466f8897c6d70a73914f52e871ca6b5b2bd2",
    "signature": "0xd2ad003a8838fe90104077a4792cada4e1e037d630d3c8e6b0c0b0155b1533a11b6129b11d87328b55c5db0cb3228ea481fcbd8619d24fd07f43812573b629271b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}