{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "174543",
    "entityType": "User",
    "nonce": "0x150a6084a6e00a4a4c7e76a2107f672fe64d32770924e219c454c554f720ac9d",
    "signature": "0x20cee17ded13cd08a61f3431ee0fa9a3a2410b175a9d5e2fe31ac634995c9de77020ee00d439a948d542853a764a89b2080a9511ea21dcea05a4762c1e989b331b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}