{
  "manageEntity": {
    "action": "Repost",
    "entityId": "1490910069",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0xb494aa7d9ab364870a7ca7dbff4b63579787adb96fcd978ee239efc01abe3aed",
    "signature": "0x0ce7dfd7ca8d5e01af37ca034ebea3489828476e27558904431ee6df33d0083277344a1bc1c668854ef4eeddc9a5e9dbd32ca50e66b342f7ea52916ab01838a01c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}