{
  "manageEntity": {
    "action": "Update",
    "entityId": "764570642",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0baa4ea2f03c9509438daceb1920b2df3604ff87aac2648e372a8ada3c7f7588",
    "signature": "0x84e0b7b25a3cee31deccf355759d4d32dc4473a9f3fabc49600b761603629c2b64824146a27ac4f4ad36bf74756a13a5b764407d51a21d4960ff3cfa232275e31c",
    "signer": "0x999B1738A12D7Eb90C4C637B94F93D70E79bf3A2",
    "userId": "764570642"
  }
}