{
  "manageEntity": {
    "action": "Save",
    "entityId": "932184165",
    "entityType": "Track",
    "nonce": "0x907d1baa502d30fd026e9333a8832cc171ff2c4c9bc94f6e434b8aae73149199",
    "signature": "0x858c292c4f2cd6312fdb39bc3d2f3ad3d844e4a1ebdb80c6ffdc29d3cbcfc89625e66db072dc02f700330903610085386c9ae0055c352aca58a86c493ed1f5471c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}