{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0xc75c2c12cf92d8a56a09b6213ca95f785cb878599113f907000c336e9a3b115c",
    "signature": "0xfd12680a5be18b16cd82a3b31bfa489522c23de37ac152ebabe2b73572768ceb1cd9179a070414d9f32944bfa5eda2143ea9817f9c9d673c1c198c670103c3f41c",
    "signer": "0x3c30507939bFBf87FAC58ff7512A140BdE48C0Cb",
    "userId": "216427183"
  }
}