{
  "manageEntity": {
    "action": "Update",
    "entityId": "877759925",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8de879a8dcfef8036b03c00c5f9f4ca9c2144ef0f912b01582facf55ef095478",
    "signature": "0x187fa12673e2c3177351d86b905bd42d01f442836235d4ceab9053595faece341d7276cc50e2d3fa648ae0cc94dd59fa3a4f999815f23271ba633e1c631d2e4d1b",
    "signer": "0x0AF6A4286FfF89666F385186440d5d3B9A61A3d4",
    "userId": "877759925"
  }
}