{
  "manageEntity": {
    "action": "Repost",
    "entityId": "1387988470",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x03111c612ba3ec667007a51826cf8aaf83de8ac1346ebe878a994bd6e9b2eaf0",
    "signature": "0xe94d749dfb689f2b6b7a4a336f074831f765e9b84e80698963a7693d0e704b237aa3f9543be186def9a5d8bc04360050d6bf4b2dda104cdd2131d4c89c7ca3e51c",
    "signer": "0xfB6436C438F897b7eA739876B4Cfcca832868820",
    "userId": "512354652"
  }
}