{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3cb2808098e2b24ec9c7442539446304cddf8332b9303fb2b0b8c7e5d80c42e8",
    "signature": "0x7217ca7d5e2339e8738174d69b25a38cfaabb6232f3672ab508b9ad313be074d6080557a02ca8e52b9f7a2baf8940f6119968434b87771a6c6be558c16fa8bd21b",
    "signer": "0x6CF29C21c9C0b405C773f3605658C095Af4c28EF",
    "userId": "950485788"
  }
}