{
  "manageEntity": {
    "action": "Update",
    "entityId": "513706473",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe08cada22cecd8d6418b54cdadc37d7d84402b2b0791a9cdaf8e82ec94f8e9a4",
    "signature": "0x6e3bbabfde90be7aa344373e3cce070918438a2a82cb707456c1e918cd603b7a744a744fe92cae6fc0bb4246e7b1b079eb107ad430a1defc5f237849d20715ec1b",
    "signer": "0x680Cf34238296b9341c2e109b163Ac0a17c8d938",
    "userId": "513706473"
  }
}