{
  "manageEntity": {
    "action": "Save",
    "entityId": "1459616251",
    "entityType": "Track",
    "nonce": "0x8e1fdf1aba189ca9003f772aef33fb4099b8ef349e1a0faff1d11d04bcd0eebb",
    "signature": "0x7c03dc156db791bc6408d988d2cc1f040d56ffbbdc93fc69dc35b0745172c63b44a68755afd5f87812fb0e2df20d00daa107000e469a8d08467a3f26a91921aa1b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}