{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "588619325",
    "entityType": "Track",
    "nonce": "0x7feda2d76db96931be6a0506733fe69bffbe6b0ef50d33f919094c060deb9042",
    "signature": "0x720ae5b5fd298a83b50bc986dfd4bd1afd5405eeec07715de5ad75bf13bcc9480cc29c246d4df2561f73f36210affd60147d41f35b8634f3a603492cd5c362151b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}