{
  "manageEntity": {
    "action": "Save",
    "entityId": "1151980971",
    "entityType": "Track",
    "nonce": "0x3ff79674e9a71308230e094727600e3cbfdddc3c4e416a6b9923251c2d53f0fc",
    "signature": "0xf5f0b1f27e735e19454bd678602f31cc035caaf70615c286df80809525a3a0183ca09fa01ecd1b5d9e899303fc4fb93fee872abf712e4d02b0bcaf8f49b87ee51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}