{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390124",
    "entityType": "User",
    "nonce": "0x4986370089643270d37d8ce5f5d43c8fbc541217d0fbbc8bfc22c16dda83ebdf",
    "signature": "0x1491c7133b4c117f15f8ef1c8666b8a75fe813be04150deb45b54d0b2ada18fd0ef05ebed36652b21d1b6a6038de4a2a88e1ea933a593f9f135e7829240c2dca1b",
    "signer": "0xe7c3A8b57D5E123621e7EC38D44ff443b172E8Bc",
    "userId": "99359499"
  }
}