{
  "manageEntity": {
    "action": "Save",
    "entityId": "83218564",
    "entityType": "Track",
    "nonce": "0x58eddf0a79567cb400eac40594b92e2f51c10031bf078e0314b2155b4bdaafa1",
    "signature": "0x8c533547a4411eb988ddb78bcd760e4d89826ce3ae59ab55e70e4c722943c6303d85230eadf6aba2b6d15f2f616396bf023e1f42f145735d4f9fa95651898c1b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}