{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x26a7c2855900ca7104e850c0215febf2bc05e7160cd660664747afb67ccf0828",
    "signature": "0x70b340e9428349e2531610c45d60c075517e0ac17fc169e710904359c9c91a3555cc66d109e18693f2e44fc342cead8f4be1f05482146211295098811caeb0251c",
    "signer": "0x623F4Ef45156b3E09BcfDAA0D7AD20726C314919",
    "userId": "372587631"
  }
}