{
  "manageEntity": {
    "action": "Update",
    "entityId": "743836779",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x23682b6ba8158b794d20fcd2a15cd76114f8dc52b1e5f716c01b11782dc415ad",
    "signature": "0xd457758b150661cea226d1772c9bc83c0ad1e4fc56d699836555da9cf17873e717a14e3f1fa8645c0497c983792a73f91d4b926ebaba97e8b6495131fd1ada951c",
    "signer": "0xf0CB0bE09587831c3cC7689f3e01De1457073033",
    "userId": "743836779"
  }
}