{
  "manageEntity": {
    "action": "Update",
    "entityId": "742356608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6f588dea83ce55abf90bbdbee73ff7aa36a413706dc2963c82a54d9e78305586",
    "signature": "0x43419f35af706b9d60c26b1ccf3d1e94de99522b023e648d941b7128307f34357590f2d152a047f20014d906da09f0fd2cf7fb2b067d99df5016dc841705b83f1c",
    "signer": "0x325ebB0cc2Cd4233EDBB752A7855922D0C417bca",
    "userId": "742356608"
  }
}