{
  "manageEntity": {
    "action": "Save",
    "entityId": "1760101400",
    "entityType": "Track",
    "nonce": "0x8f6ab345d609354fef5117abad844d3bbab8394760d4a2f8523d1aa486c6e8e0",
    "signature": "0x8dc594430f2d8fcfa51da2a547edcbe47c978b867a0c783c82c469d14cdeeaea4bb6099e58f8015e8df2625389e748583bf4035f6d88924aafd90409f4a0a21c1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}