{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "522249",
    "entityType": "Track",
    "nonce": "0xdfda077bd4db101399a103d88d8217d8151289033dc4e03c21fcc630d9431234",
    "signature": "0xed3e701337909ef731ff473ed922c9c46b944e0b54ac4a391b69773c7a223e9a31fe7a360902a89fbb557970abb55ac9255f1ad117540ee58a184c79d7012eca1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}