{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "136817325",
    "entityType": "Track",
    "nonce": "0xbcee3e3b6c2302d1a8354073602f737ece47876b49e3ebfa877733393fc68f91",
    "signature": "0x63bb4f1374c1fc52e91f6642f238553d7890d838d31d6529f10a572b96e667b177a0d76a3a3b0ddf3ee15b8db3a4cd8ec8c456e8efd035b73203f93a6450805d1b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}