{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781841071",
    "entityType": "User",
    "nonce": "0x56ce88a14680546377573fae43d0c1c379bdc206d70fb31abce3f6344b20dbce",
    "signature": "0x99f641e1c3b75dcacd6c96593733f698920b965efc506796804a6110cbbfee7d7034364b7932d76af56989d59ad5ba08ef18b648583c5be5bacf2e253bfaf3391c",
    "signer": "0x316933E449A0b429014E405447c447C9Bc472bE9",
    "userId": "451684863"
  }
}