{
  "manageEntity": {
    "action": "Update",
    "entityId": "881446128",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb34a212bd423a2786c910f9c6069eb20652e293728a5b7739603b982fd9f1bc1",
    "signature": "0x9436a99c788f31b87770ed501d8f25bbe4166f0c23d9b5d59f808db5958f6fe5302c212b53d63d68033bbf9932921a3d9bf1947bf03ae44f127d1ae31119d4091c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}