{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "978464946",
    "entityType": "User",
    "nonce": "0x6e4c20e25fb20e4a70972a7bb1c07e4e01407fdc8e6f48dfc261d45a834b2a42",
    "signature": "0xcef0f855b525ce60669faad8cd47ac58c320c309d5dae7b67c2d02897977da5000e3145d96ce7a45902cae4bb11f40df9be6dce0ab14279e1958519e7ea9428c1b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}