{
  "manageEntity": {
    "action": "Save",
    "entityId": "1765638734",
    "entityType": "Track",
    "nonce": "0x36e46eec86645314679a11db018ca4fa454a2061b6de45cd86d3aaed959f0d86",
    "signature": "0x4a9e39c9afb8b1edd7787d1db8c26481321e703fcdaecaf37718840484e1c23863397df82a120414aed4d2bb8d0b3fc96f8e58aca7413ce1917de85e675b02a81b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}