{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0xa7cc7621e9fd44ae55f4a7c67feddcb5f48a6145d57f1110a3c3fa17b8a7358f",
    "signature": "0x6f553c9707b17b64f948662c9f7bbec73e4888b5eaf2ababa188a494e81b4612156abbb9220843f4f2dda169974b15afd06958447f19573e6088cdc749be72721b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}