{
  "manageEntity": {
    "action": "Repost",
    "entityId": "1512607872",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0xfd64576903294892414063c6b0cc40b344452091d8870e1300e6563f06b4cbf9",
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    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}