{
  "manageEntity": {
    "action": "Save",
    "entityId": "1748120788",
    "entityType": "Track",
    "nonce": "0x06d34624a482b0d42590e3937d699b5f6fc13a0c304d5788556297362f0c0415",
    "signature": "0x05ec356dffb6adc8b83eba0155b4a72eba4e57366b712c004b243eb9757c803f4ae24df991465d3205a364627db47b7d323bc82b46fc5a8a1f14b9c0957e2d3d1c",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}