{
  "manageEntity": {
    "action": "Update",
    "entityId": "505787434",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratkuwhtl5u5gb6mi3v4kxovtjqcqram6vd7sw2gsn5xna5whv2r6q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":40293}]}}}",
    "nonce": "0x7ce8da73afc03d7882cb14748a04c175e710ffbb06b56f1d46c1b939735d5e3e",
    "signature": "0xdfa363b035af7bb0d38943f8aeb9f6d95827ddb3a588595e5d1f9aeb4fb89d0a741cff8e622d0c52cb42469834e6bcd97c41dbb5e21b83f522202df493df3dda1c",
    "signer": "0x7A49b4225414DfE2D3601F6d5Eb10989dF756b1B",
    "userId": "505787434"
  }
}