{
  "manageEntity": {
    "action": "Update",
    "entityId": "842184293",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd31667a9b57b87540873ae862aab3f94687c7234e7f5ca3d401ea4ca63a1e522",
    "signature": "0x1ca7fb435457beb325f2119a0f45854e34027f7af745b708c186ab62a536350a4db4eb30aa6d88d80dcc0e6dcd79b1d492d129064170426ac9388a2d3a9845851c",
    "signer": "0x69bc677cf08a3B6867979aAA5D088Ce6E916904A",
    "userId": "842184293"
  }
}