{
  "manageEntity": {
    "action": "Save",
    "entityId": "1891847556",
    "entityType": "Track",
    "nonce": "0xf596461921d6262fed76a3b5907dcb310c63f6b4aa764eb62b5ab15ba5352999",
    "signature": "0xebbb40643da3dc1d0238d0d647b7e1930506533674601368ab689d3b2e65e1e05f3192bf9dafa354ee5ed165d2bdf8998cfc205bba46f825dd701ad95a4f61dd1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}