{
  "manageEntity": {
    "action": "Save",
    "entityId": "587501567",
    "entityType": "Track",
    "nonce": "0x115118b3746224e108c03bf11fce80d747d6252644cdd7d42b53aeca5f82f881",
    "signature": "0x1993fe764c1bdd459afe6e2948b00cf71abb5cad839bfda3887e0cee7f817d7c56ca25c6f370aac1195fa914b6de43e717afe1fa29e8652169afd8674fc6de5d1c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}