{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42535",
    "entityType": "User",
    "nonce": "0xf418b0e8bd23010dd41f477c9ba5844127820ed8acb9fd083ae72621a819c868",
    "signature": "0xa67d3c1ed4c984ba3b493ee87575d658c42b70b87d2130d6b545c4532c7ae92c31c640b75bd3f5714fa53c1e6fa69589aec96845ba37bec158b3ae8ca96a3a1b1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}