{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303777695",
    "entityType": "User",
    "nonce": "0x79a73c68ef77560fc1b9606c94d30c41a337dd6b1372ff53047bb8aa0c122160",
    "signature": "0xef5dc9a64563d8ab88c19671490331fe9487910625828d1145819c3240d3157356f76970f28b60e39a9e9745ebf1fa771d44c9183f8689652c84b99893cb022b1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}