{
  "manageEntity": {
    "action": "Save",
    "entityId": "862598885",
    "entityType": "Track",
    "nonce": "0xe963245d0bb3e25d679ed1f1d447c0daba598046fe480d2e3adf2934977f01fe",
    "signature": "0x92ab69f4c8577bb0e68fa618b51b2d9bb689972f84d4cb5c90492d54fadfe3286705ec4d532799b2ff632372c26ebdbb86cb162a1ce874909755b85a15088e121c",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}