{
  "manageEntity": {
    "action": "Repost",
    "entityId": "21903",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x2c0a32543118e0f513bc058775c5409fea7ebab99a0d12a80148f76aaeaf2ef7",
    "signature": "0x104e1e5d25126279b8565edb923bf22b7e5ad3aac0983285a677d741d00f14080863baba9aeaed9511d0b3b31f9306be340adb9423a67ba6c675d7bfcca9759a1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}