{
  "manageEntity": {
    "action": "Save",
    "entityId": "1334397594",
    "entityType": "Track",
    "nonce": "0xc3fd8d3fe817dd4d4a25054fdd7b1d38c0dd390d0c158d98a6f57f7ba0eec13a",
    "signature": "0x78b6940967b7ac724b01a7ab710d09c641552b4c1e9caf3b765e7c33103100ee305c2a681ea0922d4f3a9a775c82221bb896d72ba834af09ec1a726a8afff2d81c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}