{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc3f8dbff97b240fcb1489c0c88fe1bd15d40487bd3776330d4ff0e5cae57658e",
    "signature": "0x554ebf9efa4f7ead3878c604503dfe6b3ab35c54c0f49be55cf3b23f74cc62d93145588e63208f462ae99427ace66eb106153aca09ae1b67c0f2fb3872ef25171b",
    "signer": "0x3f7Eb5045d2f6Cef70C60866ED4765d4b6266A04",
    "userId": "40528859"
  }
}