{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4774",
    "entityType": "User",
    "nonce": "0x6497feb938914901ffe631b168894221021b8f52c7c2c8776140b116e76a0ef3",
    "signature": "0xb62f93f6c785568ae102c46ff758d9092fa566b0dd38bed834d0c6f82657c1fd2fb15664e5dc1bec815f18d53017f649ca7fd694f6857e1474badc0b9e0923941c",
    "signer": "0x87D061690DA9303B273AD54F96fAf50058d2b73F",
    "userId": "318437"
  }
}