{
  "manageEntity": {
    "action": "Save",
    "entityId": "851278880",
    "entityType": "Track",
    "nonce": "0xcab184d4ad55ca2d82fda1399f8e5fc464c8c0d72decafdf355c2a75e68099ae",
    "signature": "0x11964e3d28975fe8cd05c58987e47956e8d78b45d363c0fce06c80498ebb51b10208c93dcec817b7e8836b9f9a3d38d278ba4d09fc95d9cd9376e7abbdb4f3451c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}