{
  "manageEntity": {
    "action": "Repost",
    "entityId": "639759",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x54eea7583a28ef2506eb29ab499e48e436118b23b65674d752403252f7fd40a2",
    "signature": "0xd1bbec2719b485e541db58a2f28a652845444ab10694ff50b6f862bff6515190490745ce6226af362e04ec5a90a9e6d465abd2fb0c6403aa96fd3f2451751ee21c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}