{
  "manageEntity": {
    "action": "Save",
    "entityId": "41758931",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x19ecd8f86b573f310e5e7dc8063f15a94f036b407ff022c27de09868998d9d58",
    "signature": "0xd081bc8726d1081e8819e851e965797860102bb9058b93db10933c69b14a5ce30185feaf2781c25868f0e770daa16d7505debf981f3d3fd210eee523739acfa01b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}