{
  "manageEntity": {
    "action": "Save",
    "entityId": "53566",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x683df264794d5ffe4d949c440a72f29d682a75ca1fff486482bf71d48f95778c",
    "signature": "0x2c0d89a42d6435afd5e0053833cc3bf933c0be7ca9374ecb9f6e10ea69325aa327a111978b67b2a6528f8c2100a0f51b1a0fec94f39f29cae6a4e620e3574bdd1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}