{
  "manageEntity": {
    "action": "Update",
    "entityId": "837019248",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd5028e3cda24ef0019281b7e81ad106945bf19afcdebc88a42650093631c1c50",
    "signature": "0xdc30637257557cfd48e7d74372e2d457f01e2b081841ee4ed64f96bed0d2a24e7e2ec6333750be716609e95ef91931a6a5741acfcb72fc750866961d1c1e2c2d1c",
    "signer": "0x1A4cD71Cb8c06459856FACa017c307D754382b62",
    "userId": "837019248"
  }
}