{
  "manageEntity": {
    "action": "Update",
    "entityId": "190634058",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawn5sac4rqdpkvco5zitlsnkqg3xxbt5tle7sh5klnlwehq4rae4a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1372591536}]}}}",
    "nonce": "0xede0d2e1afaf2576cc23fac668fabf2ca120e9ebee29622a5c688be8fe643c8f",
    "signature": "0x584faaf4c19b5265a532e8f0557e12d391785cfd82a311e13d442d1eba5261b23abc54000e67995afba3ffff83e2da1f97144be24ab2d14cb74a4d4d1bcff2e31c",
    "signer": "0x28a91687f22d454063c52F6D9d9e6de3A0f3c09E",
    "userId": "190634058"
  }
}