{
  "manageEntity": {
    "action": "Save",
    "entityId": "92578",
    "entityType": "Track",
    "nonce": "0x1528b1766677d3d1e6bb88637f14b6c1354bb8e86b0d56878df49613805acab1",
    "signature": "0x5ef9d65848eb2216ae2aa07cd190a26e3a5f5454a37f243144f772de3a3ad7336789e13d4e424a345d4723736a2efc07d8464da014a04697425db96cdaf0e8c51b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}