{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0c43bb5c21c6e153951fbc53c0060560c1229abcc33b876f4d9c1e4cb510d118",
    "signature": "0x0d91331c32d57c3398f40bca8fbba5122fce27499e53d1b444b9276b732a16a753d47a5d65a524bbaa2b31d1b6cbbc781eefa74af036b905e322d84223bf64cc1b",
    "signer": "0x5b2F4e52C1da407B9e7fb52524340D4f97D58749",
    "userId": "68014846"
  }
}