{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "649816130",
    "entityType": "User",
    "nonce": "0x371ee96e437acd8eeb509feb2b505a678d0a84cb79963901e1c4795c60d734a0",
    "signature": "0xbc2314a3a888e998bb0c96003f7d357e90d483ebb9f1385d0c133c11992fd0ea2241b3c8f6775d53883950c29945529e9c56e4d28bdfc65652424a687ec3fb001b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}