{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0x0b8ebde4b7edf40e3cb418baffeff0ce656c6969692b50d7c00fc7c5c1b8cebe",
    "signature": "0x9cd67a4e3252824f343a098a4cc5ce6586971230ab9f01a4f4b7d13151e4460d1e5be0b90f5abb7640733725b8b7f65ddf9c9a92f7fd75a37fa170c86d9754d11c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}