{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870665506",
    "entityType": "User",
    "nonce": "0x7a6aadc76f30d9e38005362e4cbc98a3beadff26beef82f53005590165d30ca2",
    "signature": "0x1b4ecfb2cc7f75b909dad8fa0967210bf69abc8c5626b8f221afe31ef969783129a2cb717853fe3edb25e65880d1f06cbfb9cdc676bb92839437b30687bf3c7e1b",
    "signer": "0x720537125Aa4b451266209E0d508D7576a4bAF94",
    "userId": "942771296"
  }
}