{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "690497229",
    "entityType": "Track",
    "nonce": "0x2ebaf944ecf0416462efbded485f4c033f576566ba6298420d3bde9067c15b70",
    "signature": "0x17fde1c2296b64ec6ec979633469b6f8546daaa62758e3927cc3972d6f82d99167262d58b2c40b1d9e632f51c518ecd35306330c449d017765c572bce9c311181c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}