{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3396",
    "entityType": "User",
    "nonce": "0x947360b55aa1c8e3892826f00fd602aa864ed5550082b6148e828e97248bb967",
    "signature": "0xd2278dbed032e95622df1da00f85d9defa009163c785a354aabfe472ed882d59670056f0d10417381c4d0906fdffb5b07d6f2284a8336a5d161d248c0194fd2a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}