{
  "manageEntity": {
    "action": "Update",
    "entityId": "344552512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x50af0e93df80e6880334ecc5aec5ca71177a55e1733b6106a528e32490e284c1",
    "signature": "0x2bdca629058dacf805c2c747fd93c986030e815b5f8b8fb46bdd87208670495a59203d3ded2a811d3d067977145426101a515984fb15321896eecb18d585405a1c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}