{
  "manageEntity": {
    "action": "Save",
    "entityId": "114804",
    "entityType": "Track",
    "nonce": "0x164af064cd049694b248c7bda181d1fa27b87d587894fb2bfb5cccf58610174c",
    "signature": "0xbf1f9c30f0b34c85db8719fed719a94077759f17413dd8ce5640a2be0729a65a7dd89b8365e0cc4d92f90e31cfdb8a02541d6e7573dc8ff913e3eba86ffe79a01c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}