{
  "manageEntity": {
    "action": "Repost",
    "entityId": "639758",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x0e69cddec8ce1edaf960964614a7a3dc6d62700489772b51ffe11cfb932e8c45",
    "signature": "0xaca299d5705dfe3f2e2eb8d263b5581389065b0a2f392eebdcb5eb5f6469479951dd72c561540331e3076457b3eb6c98db1ebf805c460a9553bd305c59bcb1e91b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}