{
  "manageEntity": {
    "action": "Update",
    "entityId": "28240798",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbffa4c68e312b83378a6ae2f5fe48d87b62149849de3ce4ab555cb04c458db3f",
    "signature": "0x958e9767720a998fb32464461c912782c0d4b4107b6da222211f8068200d964f4e956e1bf3e67dd3f2420640ebe60fb31c2a1d05ec5ef23ad37eb886281a21021c",
    "signer": "0xEc377b67328447935401Ebc4Ed75Ec0B2217Cf0b",
    "userId": "28240798"
  }
}