{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1262872499",
    "entityType": "Track",
    "nonce": "0x8775ef4e2ec7d5954426940463c1df0cdfdc415c6e02f1ffdfca8c94553d4cc1",
    "signature": "0x05fb61e81ef38e887f8698952187cf370883b463c32196090498c938fe26ea051e2b5d123db3cc8c8d8d66f0f0d77a20eaf9f298bf79a71a9463f4c175eb99ad1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}