{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x1e001e2f819a09a3c73e0c17991c33c3ebc0e938ba3b762bf26395ab78d057df",
    "signature": "0xf8d14bdaee1a9c1e8ea02c7414edbd5f5eaeeec41660defb739926b5ef4be23b18a9ac5eb247cd40bd52636378b579e72be060870d12c898bfd6d5738b012a181b",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}