{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136844578",
    "entityType": "User",
    "nonce": "0xc42d38692e049ea982a9d202f8b3b740afb869f6af41cdd3e330f0ca133e6bd9",
    "signature": "0xf1b6f9298761cfdd1071bf3abb8fab095e3fdf88bf877c8cc651bbd4172a5f174bdc0c5fe17e191275b0e9a3dcf0deed8a8c4099f9b50ebaf6f70b2f7c9d57961c",
    "signer": "0x3e4953461b6671604B2E8fcD0BdB628DF4C16609",
    "userId": "167051786"
  }
}