{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x506fd1be7357909ec439af6e6335a3278a2c94a2b98b36cf3f7ab1aafc430e31",
    "signature": "0x2e9896e46ea113ae4ec43ac057e2b6a66bc2354f0e518e5794d99890c31c6d0f7c7061f40890f18dd11c68405c106b2c965fc17475be78069fc44412658aaadd1b",
    "signer": "0xe7293f8b43D4078aB99171ccd3740696D1B2C993",
    "userId": "511357749"
  }
}