{
  "manageEntity": {
    "action": "Save",
    "entityId": "1071414",
    "entityType": "Track",
    "nonce": "0x0d8ff0ccad73e3377cdd05c37e8264d76f68b780af40e91e98daa93437684f59",
    "signature": "0x40be02f9aeb14faf69a0ba81158dacd9b3deb288dabe8ee9968c3511c205660055f4136ae249c0985b24ccbffa1ee8ecbf5c33de4254d854724222095e0add651c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}