{
  "manageEntity": {
    "action": "Update",
    "entityId": "777619552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x220f214ef9043a68b03aaa3a650d88f52f03f21b2c59308e685546ca5498abbd",
    "signature": "0x58b37970e5c0840dbd41413de35fc902d0daa406ae09cff0ce361e406919adf3595079f2349c21714a29ca13a184171d47881e3dfa8843242b0e5c8175d491391c",
    "signer": "0xb18D2c0C8Aae7bA7C122784dDaB20C1f2876D3A3",
    "userId": "777619552"
  }
}