{
  "manageEntity": {
    "action": "Update",
    "entityId": "200438994",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x43204945cc6f05d3b2b21b950874d4f936e87e98fc8fc5a16b628220dbfdf108",
    "signature": "0x6ed8bd24f0e1e1b2b9f3d4f609af0b1e66d6d870dad6958c4b61756cd95774bc754af5c8145e35aa4d032edded867c947ac4c7475c5bd45dc31cb9e925bb7f931b",
    "signer": "0x28225d9a0F9Ad37aEd0bd961a40F0d8a9340948E",
    "userId": "200438994"
  }
}