{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13ccbacadba9abb60deb57b7afe9084d43983441e22ede29e2c85b6de7ae8e68",
    "signature": "0x2472a94c7b4871ecc6b7c23a6412ede5a55c91e0532236008da399773723cc9f676315c89daf52cde1787819b32782d9eb8b1a590d0cf6533b3205ed3d2efd571c",
    "signer": "0xE260934133a8a76dd2C2ca6028B915aF32247963",
    "userId": "378801526"
  }
}