{
  "manageEntity": {
    "action": "Update",
    "entityId": "941343958",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7a3d4b87f6049e1404b42c5400c38d6acc38557b2f485b43623ae6d80976f2bb",
    "signature": "0xc762abea224b31bf1ce373c25e0b28188482b457b11a77adc95b659483fcf1dd2dea78ee6bcc3f04ae43f1797a37826961846f72ded83a68b3f224e989af4be81c",
    "signer": "0x9E576B822F4873B0aEc2E4D46715EeB5fB00936f",
    "userId": "941343958"
  }
}