{
  "manageEntity": {
    "action": "Update",
    "entityId": "598175321",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd787c7d5c1ca14abd3f6688dbb5ef62482b35719bc9f57c49a5258d420bb4dd3",
    "signature": "0x3c106b32891e07fd76097af9e7a54b6673990fb6788d687940460b16177577173ab3e82de312a274c63d2eabc437c34a10bfc5d2a2e92f4e31628fa9779f56881b",
    "signer": "0x3b921c82a4ee5981701654bF542552C09eefc3B6",
    "userId": "598175321"
  }
}