{
  "manageEntity": {
    "action": "Update",
    "entityId": "980941",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierapffx2cgk3htoh2wkb5tbuyv7hnywl35scxyinkxznicyoqp67o4q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1683845443},{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":53481},{\"type\":\"playlist\",\"playlist_id\":142975}]}}}",
    "nonce": "0x48eb1492238b465f02dbd5aba219ec212493d543a1d01fc60370d26a7e160ec3",
    "signature": "0x5c4ef90f8796b80d615754fd2b6cc526cce6d6e66194e53e1b1df1a2a834eb892f8b996d098ca42b2786a6a83b022badecf1d6cb18e4cbae31b6dc370ba22c851c",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}