{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa53ff7f1458219e141150b04dccc3bf91639e3a05526102b58b4b51faac40d61",
    "signature": "0xb9cdcea3702eb822bf335ead9433a9f34764e69fe4d2387da0ea7c30d5b1f8ec04f647b3b32261461b3618c8e244e971df818db2f1061b5c9a90f76af9a4c0ed1c",
    "signer": "0xd735d11B4b1d01322F82ab617a91cc8c0dCd66bB",
    "userId": "902169117"
  }
}