{
  "manageEntity": {
    "action": "Save",
    "entityId": "11703",
    "entityType": "Track",
    "nonce": "0xc0734021693cec5126b1b6730fb5d38a51e7afa0c84c7f9d95ae7277903f4ee8",
    "signature": "0x04a1e3c6546ceb2d51d564b0ba52f464d2a58840276678d03f762c735618b9551836757ab6fff8beea83adac1ff29ad1387ca3aa520b5858f1871f080d28f4881b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}