{
  "manageEntity": {
    "action": "Update",
    "entityId": "239292441",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x15ef99d53fc6849de5e1dd807906f42ca2c9fd1970e2da910d0a028adae102e0",
    "signature": "0x4ca4d9baa4e2057c2744391e06e8c73cbebdb4fdf92fef95eb2946e8195edf327d8bca3312986cd26befba3e6784aefc897c0932d59a9e367a3f07d46e99abea1c",
    "signer": "0x0163B52F0bE66Cd3dd2849cdFD6D7fb858837cdA",
    "userId": "239292441"
  }
}