{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x689503ef42c69ccfc005b9186578e9f6326c2b0322be37cfe7d5c4586850596a",
    "signature": "0xfdfddad73521ba865e1ea28de8b08ee942f6a2a79b903b8100b0ab0b3bd2b58c12940982868aebdc9a5206c1caa161d3fa388b4c3ca65bf5ba7b2a5390b8888a1b",
    "signer": "0x4237722b0c3824C6614ad946E27f039D3A1ca5ce",
    "userId": "754222368"
  }
}