{
  "manageEntity": {
    "action": "Save",
    "entityId": "1115486851",
    "entityType": "Track",
    "nonce": "0x4c00c27ca3b0aa50d79ce75e1a5b8761bd65b32d5ac42589277bfef27a380d92",
    "signature": "0x8d536aac2c3e258c1c5092638efda38bfaa97b84f7bbbf732fe561c67a8e961f36eb144f1c825113bcb2c6f1e5fb3e2de44c7f6455e1f537661d57b2541396c51c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}