{
  "manageEntity": {
    "action": "Update",
    "entityId": "227507310",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfece1f6fd0042e3b72ab37160b3df74502aedd63fff0cb2fa7a622a6e80d9eec",
    "signature": "0xf28304811946781cce3bb1de060383bade2ca07d274685d1446f670457dccd666e6623af772225e4921caacf1e44eee798bc65a9063fa42c407ac3ca920a91f81c",
    "signer": "0x539dA07eC1BAFf8fe039C98c2CA1507dD9B36504",
    "userId": "227507310"
  }
}