{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "312309",
    "entityType": "User",
    "nonce": "0x3c303687cd7f8e5d4365c94bd305d29c61e82c1d994e4b6aee4f8d6c783de227",
    "signature": "0xcff844fc21d2e9ac5abb8c2485432c6b99a962b9eace81e2d4ae8c54f2bfe2007fc5383059cb402b4d10ff4049740ae7108d4b7cb19c6a5b74ec55131e0329d41b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}