{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904230991",
    "entityType": "User",
    "nonce": "0xc1154e6f76a360e774ab69a23be6789367a49d8551a97d8ba6a1be91968847bf",
    "signature": "0x928a3735a51eb7131d2030448d0c46099b1bc1e7ed4f1b85be7f155ab4db4f433b768a80fe2154f1e867ee2f6274b8cf748f51034cba0e1f87a7b42b7a8df9b71b",
    "signer": "0xae00ddaAC04b9A436E6509debd96F0736AB61283",
    "userId": "258969316"
  }
}