{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x77f24d281e1b2df299fb332c07f3c38059335a8f153f2012649dd6367f63a302",
    "signature": "0xd7aa4298b402d701793309d2a6d4fb0de9ab2d5c10f257ad58f664a28300472f0f8ded90246501f657ec56b96f175e57e61d245aaeed55e601baf1f9359b28141b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}