{
  "manageEntity": {
    "action": "Save",
    "entityId": "1459873244",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x31a521a486a33ce9d330c7739fd121ce8696da54fee609b63e8b325906d0943a",
    "signature": "0x3d786209ae6c9d5c940e396d2e12cc11ab8a3d3af5b8686cc0c9459b1f5a276e065d39bf0a6e3f00aeb7c4024321cf505aad3409012cc197686f190f18285d791b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}