{
  "manageEntity": {
    "action": "Repost",
    "entityId": "757745",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x28900f9782662958b1a123c588d634339be124e9294481dac9d400aa321d11c7",
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    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
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}