{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5bc4e8c2981c1e17ff40e1475e01edfab99dfe3fb1dba0c72eece85fb52228c0",
    "signature": "0x58a747931a9f32d744d4dedb31970a989ba2c4d975f9c14c66be00b03e54ad500fabb701acac28a4c324e13981a61193e437ca65b63c9343e3679cc1ba33ca321c",
    "signer": "0xb0796D9597e8ed880830530759192d5b5902Bb31",
    "userId": "588820841"
  }
}