{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305482",
    "entityType": "User",
    "nonce": "0xa551f1b768a08e2f550fa559586d52ddf64b659507b403f38c221fbe8b8064c5",
    "signature": "0x8e68975251f109714e697712b4b59132db5ab2173e374a252c73a6312d6b03324d8873020929f36616e41f3dba32fd8e57287c2e45d30d5193a9289b5267ca341c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}