{
  "manageEntity": {
    "action": "Repost",
    "entityId": "521978499",
    "entityType": "Track",
    "metadata": "{\"is_repost_of_repost\":false}",
    "nonce": "0x9789e4a2e1ab5c0633d629a2bc25b1444bc549863b02b4157450960388180298",
    "signature": "0x1b4ef0275aab5f5cfb48d908760152d127a54ecad1f48a5f55adcd281f0576035054f798a3f2a404c55f489c0a7979f08ef1de17b9b767d5d127f97e01b7a3991c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}