{
  "manageEntity": {
    "action": "Save",
    "entityId": "1414383996",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe49e4109763330a4359d3e4edd7a35d22eb13c41aad574a6f2dca9574833227c",
    "signature": "0xed12be9b9e72fb326806510ca4aeb3f9efabc0d89a70e87c3616b7df4ec79ea468dd4dd50f9f0f23e9a3dad2f8dbd232e8fbc6087a00ca5d18b99f343942f83a1b",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}