{
  "manageEntity": {
    "action": "Update",
    "entityId": "770031865",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe9381358e1eda6b435056bcff3aae08404730a3fe9f61651ed4657d050785bcd",
    "signature": "0x5e5a1b665354d4fd7a3ab19f828a6fa2b74f55c753bd9ba56f721c4b461c1409625dfa603f08484381676b0f04f14def3fa04e5f3434956ce2ebfd0cd93184591b",
    "signer": "0x647b023D9D541aEB501b247164618EC93AB65EcD",
    "userId": "770031865"
  }
}