{
  "manageEntity": {
    "action": "Update",
    "entityId": "663695959",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc8b0f0f1c707328bc9e40152a5a21b896f3089b057148809829072dd430db24e",
    "signature": "0xf80f81885da2983588b0a0f55a9beb6f177c1e01d2ae629d9d4fc5cf6931ae106b0f7a3369039fc20d77e62491838e0b4b95cac3c5b217dc1d1cb8bf974807bf1b",
    "signer": "0x59b2AdB5457e737F50672cfd7783475958BA125c",
    "userId": "663695959"
  }
}