{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x2a22cc58b94c2f2c9456c9c81096c48d4884b18173886c800a5a2ff24e6769fd",
    "signature": "0x47c3de38038ae66c74cf92e5dd1fae90bc72e81298441a8b65b2c24231809baf326a15c2fd518dcc440f163cfb42d3b51107485e6de55b2fe56fa874973e9eec1c",
    "signer": "0x3d3C9a78785e201CD119b8f74d7d88D131bB3cb9",
    "userId": "350266629"
  }
}