{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8aa6e6df2b089fd35e2ef291c89cf496e19213ba8fa2f40ff5e24268e4244921",
    "signature": "0xc95e914ca64b9a214f8ba85c6a45f50953ef957f94f2fecbea02ca39dc0dd4af4df7d633286206eb43113c08d6b8d817fc7faaca31abc8e20b3cbecc6910c90f1c",
    "signer": "0x989b916868600DBE345598dA58094A4216f8103f",
    "userId": "347069473"
  }
}