{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x016aea79e68fb0a31d2d6f45b4736fef27aee8cfa4387a0e884c8ffaedc7aa98",
    "signature": "0x731609d08f3f284f10daf892be7b84eb1d3bf3c98cceb4258c6efbdcb931455a349b96f431c806a263ed3255cb4b2fb28f468750bebc5e09fa984ccbafd55c781c",
    "signer": "0xF3613eadcbD429c261B249b95eF7336D872C2d3D",
    "userId": "654235654"
  }
}