{
  "manageEntity": {
    "action": "Save",
    "entityId": "2011913885",
    "entityType": "Track",
    "nonce": "0xf8a2b6249a0b7c5d43d29586759e9e054324c23205ca1e9f3f82d66058feee3f",
    "signature": "0x9d1a5f392ed8e710a248fb0a18fada088a5453772fa507abd49a8b567129924f1c87b95675d5756cf2e4b66a98da10b34f4b2814f3402bfd06bafd240108f0c61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}