{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2c26b76404f00e5fce488459cd1166467d128d93f8b2f21e9ccdf3bda00cd82c",
    "signature": "0x89cb8012072107e8894a5397e0d15aa31ed42a96533eccf9e9f9f228bb6e2b200cd7a8bd592fba61688e90ae6210eda4619a6637851e277bdc20902078b3f9fe1b",
    "signer": "0x0A5cb317F11ECcA8f312B9244bBc94830B86ae1B",
    "userId": "614602910"
  }
}