{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311257477",
    "entityType": "User",
    "nonce": "0x4037aebfff908aea18940635525c903ccc62f7e9db59ff467f9a3a689cd0b0a3",
    "signature": "0xf40473653bd56d473c196b333eece9c1aecb6c084e6532ddc53e428064759e314111dd052a7220ef5514be98af22a0536348410fc84d1919eae5660d19fda75a1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}