{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1873364418",
    "entityType": "Track",
    "nonce": "0xbdeb5b0244ab145b97d47b0e1244f8e57103ce0fb23d1eb32ef8f2ccc3487d07",
    "signature": "0xf5679901548c89cb1f4f5b7d96f93fd4dd67b6d921ae0c3492828ebaa4b6319e4fdbadd3b712f59078e6f0039af9cd5d4ee4c7f61d2f99f289842b9dfb8f114c1c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}