{
  "manageEntity": {
    "action": "Update",
    "entityId": "553120706",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a135603fd9fd162ed10c6565151e7d39788c5ca7fcabbe0e1817fa05d5d8748",
    "signature": "0xaeddabfcc7d51843a39ddfa4421cdced8ef1522dae783ce3244299d34027c3f3538d78d68ddbcd7191b08af8818cd5ed6a5490d61491a62f60ea6eb7289a1fe71b",
    "signer": "0x542f3cEd0BCFe2401a4326B046A530b176Eeb51e",
    "userId": "553120706"
  }
}