{
  "manageEntity": {
    "action": "Save",
    "entityId": "1181732693",
    "entityType": "Track",
    "nonce": "0x84dbc7b7e567d679fa7c4daaf62253316f772aa55fff3ef77150283f8ae3e1d4",
    "signature": "0x58c68821cf712c53aaf61dcacdd9ecc94addc8a7d02a80e8984cbd20d27869434887cb1a900f585ffa52ab70ea0b6a112f9c381f9d5b3f8811dc5ec6228e5a731c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}