{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x84c79688fe0de720c96ff80336b34e0b561c0534c41415b2d0d921097f92badd",
    "signature": "0x293b7bec1c6eee84d0aaf62113313e32636d77a3f01a0146a2f223977a55f33b3296f6a0197c4017a4fed9965d625e0a4e5b216cdbb005e63ece54286b8d62001c",
    "signer": "0x4dD8f87Fb57e57661Fc7F115acb4a0235f415ABA",
    "userId": "806547662"
  }
}