{
  "manageEntity": {
    "action": "Update",
    "entityId": "648057458",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xba25fdd9ba6eaa7c11a816b9a4fe69fa7c2b5a926617179ad96360218c2e068a",
    "signature": "0x25bf2f48cd782ff34ff3d312dd5a0de7a208504689b62797328801dd6dee2c790a3e4e2f34cebcb6c38d2b4c118c3b8330a0b9138d5985a0eb020730fc6aa4321c",
    "signer": "0x70134d5f84e4F9F0255d176E4679c02431096339",
    "userId": "648057458"
  }
}