{
  "manageEntity": {
    "action": "Save",
    "entityId": "1417069197",
    "entityType": "Track",
    "nonce": "0xbad6cb3443d1a23bd89196302642e80433afb7e77b9ba672361ca49d380a41bc",
    "signature": "0x8bb9ae553e24129492c1e135705eba611766abdcec5905deb5b7978079b2120b701a049740466d1c1b0f7dd14e8fddf684acc3137952b9c33991d19f7e25a5b01c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}