{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122394",
    "entityType": "User",
    "nonce": "0x04f3b55a34bf2f8de802805c79b236b84dbef6fcf8980983750fe2e7c99f67b2",
    "signature": "0x1d00abbd90a7f8b1b469ed9ccff2ad5817ba531ac3c48ef3316ef0a68201308362f60b67614a4b9077a5aaf343cd887a1e78b33fb0862e01439429417c10ad581c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}