{
  "manageEntity": {
    "action": "Update",
    "entityId": "75458976",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x11af7352df18bcc7fa78e5213dcb9107d988354fc7062581c72eb839e0f89e51",
    "signature": "0xd8743a374e77c8963e02447af953803d689651409fa80fa3cb429b7f238b47ce67244245189e2ae6bdc7441998a2c02ff5967f51fd22a8bbdda8f842abede7b31b",
    "signer": "0x245cEbC9574d38Ba138112B36a6ee27cFCF48cBC",
    "userId": "75458976"
  }
}