{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123439",
    "entityType": "User",
    "nonce": "0x11797c6d6bddd70c44e5b9c28ec2e8db19bffc65873f47ed08f96d0d4ef32d4f",
    "signature": "0xd5ff60539c4501edbbfc95ba198a67fd1ca440ddbe07a1b9981cd43ee382ed070d345f74b385a5af92c35d01f0ea5e9f6ad0878b8cb67d912da8f098141fdfc11b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}