{
  "manageEntity": {
    "action": "Update",
    "entityId": "407550431",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6526f00072b8ffe4453dde41a37618f6af8f973581dcdd2e303f6b4d67784c62",
    "signature": "0xb1cbff14a7bfb167ec07ff2290e48a3dd3a1b56350b6feb746eed9af5c56ff054dca95a0151a11d72740dce5b33076ac330fac75456e551455e56217ebf3819e1b",
    "signer": "0xca0Ac666a36aE2256dD0A651F18546451F0e0eA7",
    "userId": "407550431"
  }
}