{
  "manageEntity": {
    "action": "Update",
    "entityId": "839392286",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x52b6bc12e6bdb34b431a63eb727e2cbfb884122308ac66656196fd8274f75d42",
    "signature": "0x1157796ffcf312f51c258f92ac52b739b08b0e1331cffc32807f5936701794894ced2a1251f6fa79da42872e26de3ddd93665016f2452adc29fa99838d78d9711c",
    "signer": "0xAe4cBb170b064F25D3155e4b1dEf60b2EdF1537c",
    "userId": "839392286"
  }
}