{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc1fabc1e15724743842cb1dbe9001ca880bf80511c892f69665aaf27feb46e43",
    "signature": "0x1ac929e4a241679c9eef3958768d9bc736faf893f32dae3a36d5782bb2a3c40c42dc5e921d65b7ae0844c95392dfbf1e498df7163b1fa2bc67e0ae60c178271b1b",
    "signer": "0x9Df3B620Ace778C8855C5a5C91CCa48A9b483056",
    "userId": "405518361"
  }
}