{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "99967687",
    "entityType": "User",
    "nonce": "0x1a5e93898815ae85b187a40a07d63c070ab797c19649f44fa71854f4abde5552",
    "signature": "0xda457408990e1104727c88c7c2eead2616c3bd7608a9da779f47bea288b45b6a2280f32d57ab40912556b4a87a3c6807848e220de0b7bff413c66c38a2433dfd1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}