{
  "manageEntity": {
    "action": "Update",
    "entityId": "375795342",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2291e6151936bbd8cd9a5e17534acf4173b3410dc61f567f3b755e1ef2e888eb",
    "signature": "0x8faea8c9228bf364b8a6786e8914b54ed170f0a847149810da7c999e8e38090559e62f0e7ee2cbb037c9c46fb4319339666b99ae34b82c788d378f5ff1cf82bd1c",
    "signer": "0x8d3118A5f58aCd9b42B32a8Fc593706151d99AF5",
    "userId": "375795342"
  }
}