{
  "manageEntity": {
    "action": "Save",
    "entityId": "1218949671",
    "entityType": "Track",
    "nonce": "0x0b02bd56730d8d3f9a458f8d58574e37f04b0108e8a6312c469b0a3e734641f1",
    "signature": "0x427f51cda54cd6f5764497e71325d147a4ca8a0cb43f83caae3b5e196afdfb976faf826d2f51926c52f6a57306663db88afbcb9a7ef692cf7e7a074ba56f40371b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}