{
  "manageEntity": {
    "action": "Update",
    "entityId": "891043539",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x03da295bbb92ded46d9521a206a4d7d08f1ed685edcdaec95882c8d198d7e68f",
    "signature": "0x82080f86e596c3d7761218b5fa18aed87c4c70297d9ab124f556adb841542c2b087104385a3cfc4a0fe98898c9002276c404a816467eaf775f41c1fd647748391c",
    "signer": "0x02D488F979a6DD1B8b401E3403B6af7aA52BfC60",
    "userId": "891043539"
  }
}