{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5a7c36744a1175b3c8368c27f1aae1b7c6e3131a7611c123dbe6f1879aa24e13",
    "signature": "0x83126a390cd01788bc49c0f1a5b7c0d96629607ed171a4999ad880c49dba889667d06e0751c14caf621519ddaff178adfbfa871f733194e07d204ed1f4089dfd1b",
    "signer": "0x7af46D076Dfc4AeEc0Fd675DA8515B4E90149C52",
    "userId": "130211804"
  }
}