{
  "manageEntity": {
    "action": "Save",
    "entityId": "141674410",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd5a16dfa010c11600d917a39cc9bb804e1c058476c68d2130e493d5b6441aa37",
    "signature": "0xc16a84c6a87b18a7154f8a78664470b4ad8bc59cd1a90dab0224e0a62bef8a572c23cea0772cae472bf00e4dcdb4d31733bdfce771259162bdd810ff02bce7601c",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}