{
  "manageEntity": {
    "action": "Update",
    "entityId": "498183456",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5868065ce510420f0f3220adc739d1669b216ad80d760f602d8b3bc7858e46df",
    "signature": "0x4a9a441d115d0c3f0a8e04f1bcd735f5aeed8ef0231bc6c73adf0c317ebe99335af331f436485834059c0c01ee8b1dedd31d2eb50b4c9ab9b5ef3670e48d70fb1c",
    "signer": "0x869Ae946695c9e6c037FeDef54639c2d2abcd2eB",
    "userId": "498183456"
  }
}