{
  "manageEntity": {
    "action": "Update",
    "entityId": "406892069",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8f42688c256667db0d0aaee9d0cb34db0c9ff997af08b564bea76453f9e17b44",
    "signature": "0x81e7fc32e5ecc41c2f97db9d347314269dbb4e6bd5397d0683bdd9c2262723e72267b1b4be2482fc1081d86cb4daa9e88f896186f97987b2b5289355c4e70b001b",
    "signer": "0xf4e39f23021D832A7D8e37A3e280Bb0E5bC75bFC",
    "userId": "406892069"
  }
}