{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125737",
    "entityType": "User",
    "nonce": "0xb8e121e10bd90062869fe77ecd2c1ed2b7fa1748969cdb19be64093b6b010f98",
    "signature": "0xb1225f383de28a9b16de56d236e2fb0ec0aec96bc73ab1c72e16d05ce8347a4346886ec0df279bfc713f2e3e0e1204a6c88830ba520e7bf00bbababbd88f2d4a1c",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}