{
  "manageEntity": {
    "action": "Update",
    "entityId": "691763852",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3010de9c135627740c70a2423b11ffc89e0e82926adee3ab2ca97606f5b99f89",
    "signature": "0xf533e7f13b5be961da44d8602a4763f7ab7e43c6d351e02fff43443bf7a872895fcccfcb72b1d440f1b94a2e3aa64c22286cd9b2ba95b242f13eafed3b99e2c01c",
    "signer": "0x19c64Cdece29Aa5fAe3063bDE21466119A613cfA",
    "userId": "691763852"
  }
}