{
  "manageEntity": {
    "action": "Repost",
    "entityId": "509338378",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x8767042f6490078535eac4c7a341e0cea020ca00efab37977d5a42aac3250407",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}