{
  "manageEntity": {
    "action": "Update",
    "entityId": "900895370",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6f9b44bdc7c9f18f49c3727e0912f739eac342d7f90e9082fae2af670822cf37",
    "signature": "0x36b3922d8c19ce6e9547d4572eeb934e74a393b1031df07d5f5ee2f39ce86310645ad6fab27d58092242b06538499588dcaa31134fbec828a0b3b0f9c5ef522c1b",
    "signer": "0xcB67b82C6c4F3c3077eADFCf5Cb3b7c94beC7766",
    "userId": "900895370"
  }
}