{
  "manageEntity": {
    "action": "Update",
    "entityId": "840700709",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1403bf66e49d3878f6334d505b60615085ec09f06a75e432bd1f4461ce4ab31e",
    "signature": "0x95d88d7e458370fe430af3a35004cdb6ad0562392d21bfb5105f560c7c1109d32e140cdddfad24b1b9f9dab2e5b7d39f840e053955fcb037c0245a139a6320b71c",
    "signer": "0x582624A637044A765770A1401561DDFE7a927459",
    "userId": "840700709"
  }
}