{
  "manageEntity": {
    "action": "Save",
    "entityId": "47467733",
    "entityType": "Track",
    "nonce": "0x43dcfe3d9f7a34eb239870c86ab5d2e20a13e366143dbd443e0749325d0ca285",
    "signature": "0xf6941b9a7be22a5fa292f0916d0e3992aafdcbaffe4c3de5573706e6f72624241dee6031c2fde970d4cb50e02d33c3ea2d077d66d757a74b67808bbb7abda7aa1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}