{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200945",
    "entityType": "User",
    "nonce": "0xb3712495fce8566fa2fc8dd9932c8228b7727cfa76a9d6b766693dc225179f35",
    "signature": "0xedf0f8908dc21ceb3200102c76e7bbcb79de76404709841d9ee026b02d7d94a57c9f79ab2c646ad72479726dedc0e64d142615bf6ca4f4fc76786238d9deb7201b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}