{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf16dfe4da2c28a3a55f8efc460547e1ba431647efef2314dcefc4a2e69dd231c",
    "signature": "0x9944089ce17f5f40b8b6715569d3dd0c83b8a7563bd6d0fc8e673f86377f4dbd56ba31aaf6ab766a437f2731b55cf2463768c95372636d98e8e7e7f2eff8355d1b",
    "signer": "0x8AA1b904aa25Bacf1260c22525f9b63F72B44846",
    "userId": "588085632"
  }
}