{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870782458",
    "entityType": "User",
    "nonce": "0x3d62d37735ef427be09c32d0b9ee35c91d6a980e04614f0ed94f6b8c0b40660c",
    "signature": "0x70c08bfce32b0e4b34142d662656db53e128c47c34733e9f491d4488f22ecabb05adc8e82dba4f7eefa1e3d49ba29c5fca3a32cad5f33afacb7d4dacee72d65e1b",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}