{
  "manageEntity": {
    "action": "Update",
    "entityId": "75683930",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2d6dfe366973c419065927af51fe50b15d56b47c95b978379759b1d42788a545",
    "signature": "0x3b5b49af234fcfd351eaa975c1d380e249ed9e75997d98f75203bc6881e31d981f055c22c6430d7b385963bfae823cdf04141d9974538dfa719f4ad770d68e201b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}