{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9d2403c3ae0750569b1359df4f85f522bd5667a03c3da39bed262573e68ed1b",
    "signature": "0xdda85020d25630ba25054a78d044f4bd1d806519134fe9febaa01a13d47e2f0a2de5e97ea5254ae8da8edd96d361ef7804cc0543f01656a21ed46f52e3a3aaea1c",
    "signer": "0x9B745b10f8157B65956c766e4f9CE64243E957f1",
    "userId": "244220303"
  }
}