{
  "manageEntity": {
    "action": "Update",
    "entityId": "177000451",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x21af434d7d6de4b2c3b631bc40770d6d211d0c60ad0cd7e19a5892d9fa46436b",
    "signature": "0xa244d917760bce76420d0b47450bb0c1d44012fb357afb743320f2dc8229668e04c4df0e5359b7f1106b5dd500ff32540c57ab09b95049352af4692550a6ec371c",
    "signer": "0xc981d039042087dfB2b78d9309AEB19Caf6FBFB0",
    "userId": "177000451"
  }
}