{
  "manageEntity": {
    "action": "Save",
    "entityId": "1722852873",
    "entityType": "Track",
    "nonce": "0x8cce335cfd726e5e2c79279dcc846f649000d2fdb277bd8d09e928846f710f99",
    "signature": "0x175be20ba0a04217ceb2f74fc69057be4fbf23b03317d6b95d7df2d4829fd63a08e41f793c364669c7a16d52d3931f4d7782f69c44dd2e6b0048be182cc6955b1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}