{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa6e07bbf02dcaff80b52161579c2ae000405e5c01666637a3963c5c09b3b9e85",
    "signature": "0xf35b8a8e079050c6eefaa575c050c21a864b11e9a04367ea2b8f6b2c940386246b2d5b7e7a891eb171b7e37672d6051a826816718d0b661f2e09a6e3968af31f1c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}