{
  "manageEntity": {
    "action": "Save",
    "entityId": "44525",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x272619ff71b873ea67e20ca7003735bbc222e158ebb67ccf6d998afc9ce1029f",
    "signature": "0x150c90dbb4a4ea244a5d4f26dc5a203dcae4056e7defc70f26d5e27a3b7f76b81c2046ba67d08b7ee98bc32285d251f5bffa8eccc83cf62593c04415c0b48bee1b",
    "signer": "0x9d2ec6a46a9c5b10e9f194E0d8365Fb4cD986916",
    "userId": "29050"
  }
}