{
  "manageEntity": {
    "action": "Save",
    "entityId": "1511370223",
    "entityType": "Track",
    "nonce": "0x715269219ee16d985de3b865398becfca664217481b0a4e06f4cb17c0421525d",
    "signature": "0xccf2cc8194e11ee0e303253d491af34bacdff2d44d3a2ffdf96a746888d0ff8c28e748c7e68b7ac32ec4836199d77ca74b0617ad98eb946683f6e2182a773f171c",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}