{
  "manageEntity": {
    "action": "Save",
    "entityId": "1177508860",
    "entityType": "Track",
    "nonce": "0xa71abde194c46e8a23b75ff6352ba1b95b3cffd598ee492f4f2590dd9e9ad150",
    "signature": "0x636293ada2507bd4d98169eaad09908728a6b32b968f30e10ec428a88bab9cb326263de1cc6f834701e3b3d67ff84a0be1325200edc99428917c00cecb58fc871b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}