{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308558165",
    "entityType": "User",
    "nonce": "0x2e27dd50e0be82aa8e0cf3f1f98b2a51f8ac835520451871f25c6ebc092d460c",
    "signature": "0xa051e720a7259640863a0a2cde43d5b52152acca9e0981b7264fbda70f8057fd5340a3c62159e1d4e3a4da2ec0c811d0d85a53775cff729f8d8b6cd232fe86e51b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}