{
  "manageEntity": {
    "action": "Save",
    "entityId": "2011333491",
    "entityType": "Track",
    "nonce": "0x5dc2e6f66b78d6e45467a8ab37a9b3c894cfc940874047230c2541fdf96b8a9e",
    "signature": "0xa32e9e3e84605872e39e3d26d0e70a6afe00fece1a5a9a58b7a59f238057a2360a075e4bcbafbffc5234067194381a385720a0611fe7921b67df842b99b540301c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}