{
  "manageEntity": {
    "action": "Update",
    "entityId": "464521883",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7e2de574c317876ec337eb98c063424e851aadec71f7f35f9f50842658d7cfd9",
    "signature": "0x268dcfcfae11762b7483702016ec911a3b2b6ae97cea225d6e3827ad28bdac20708029688000510f477be193106a5c7d8e6e66ce39e12471e93ae4f7fc1c76321c",
    "signer": "0xBF5a33C091c6A8356D52a214899a761152Ae4570",
    "userId": "464521883"
  }
}