{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x279fd7cd91e9851858afcde6d415de3b1dc8f475dde843e1c4061e2780eacf33",
    "signature": "0xcb45d5578e61e8ff359a5830107c17fb55acaf56414312e3927823250469ab61171b5cdae7eb11de2cccd241a7db1121624fb8353f8604b272c03f34b711ee071b",
    "signer": "0xaB7367F16faAbEEFc45929461b4405066D0f2cfe",
    "userId": "876097822"
  }
}