{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374637",
    "entityType": "User",
    "nonce": "0x1091018c166de12d5072dca5c8dfe4a5a4cd6b76eb7e5b01e7a59e69b346db02",
    "signature": "0x565fd2f9d36961425d67a6224f20790c774a0612786e8e6bf6a901f7bc84c5624cf88087d98bc96a809acfa3778fee14f57f1897a04039bef4dcff5316d9a77d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}