{
  "manageEntity": {
    "action": "Save",
    "entityId": "140569720",
    "entityType": "Track",
    "nonce": "0x47cd2277ff3723e001ab0177f87df47f9e252aa32105acef88003dc019d6dc7f",
    "signature": "0x5760f47521cda057df7ef73ea8d60918cd286c584e26ec3e86df8d1d74cbd0a2629a726edc1982fb5525c7afce37140797067be216baec04f40b78847356d8611b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}