{
  "manageEntity": {
    "action": "Update",
    "entityId": "664264575",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcf0ea636e430e953c76389341926df13e523ddc64f6524cabe301d85d81db9ae",
    "signature": "0xbacadbeb3937ac3e0324db92b1d917b20ba02efd73696556bdfde9a0b2e79359644abde52b90d906aa9fea1fad61710a9e0dc76fdfcebb0aa48da2a93a09687b1c",
    "signer": "0x1A41243Ac743D6F421B96e0416887A18f5cb61a0",
    "userId": "664264575"
  }
}