{
  "manageEntity": {
    "action": "Repost",
    "entityId": "754539",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x00fb19eebc22476e05f1073e298f72a5d8d4a950e5fd80141f4d9b79cbce75da",
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    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}