{
  "manageEntity": {
    "action": "Save",
    "entityId": "80354",
    "entityType": "Track",
    "nonce": "0xc088b462b879ff4af402370c0edc0f6a156b6e6fb4100bb9f43108778b455695",
    "signature": "0x8466d0be8ae019320756a2dc6ff5e8eecd59b936ff1a81554107b4e2f13b1ed5454ac238c67a55b52d5ff6f849e0abb5ebf66936749134386de26d77933ba0bd1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}