{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3cfa3fe6561ffdda9b0027624f1b8db3e6af9a36cca367a366662402f43c50ef",
    "signature": "0xe3abb0653142f89e351b101b8925ae0f9a62480b61ae5fe57276d1e22f86cb136292cf8193c479c21445779788793d4ee527057b1cc08892b18668bc7dfa0e131c",
    "signer": "0x53d05512E0eE5E849FdcfcCe359D12bf066A49C0",
    "userId": "329430524"
  }
}