{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302888",
    "entityType": "User",
    "nonce": "0xf4496976fac7ddfa8bd8ca8727eaa593b07776452011dcdfa266632a1778feb8",
    "signature": "0x465f88f705f130346e532fc2ba78232f6f9dae121f59651e21c3541523bc01b9702de9431e547d5dd3a08d2a2d1500f278140116c5534e3eb928fe6a4abc92331b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}