{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "743640235",
    "entityType": "User",
    "nonce": "0x79bc4779246dc1f1b68bff70aa6a0d01a0d31feb782c3b214a881a9c8cefbd96",
    "signature": "0x8b534f14e11f08cb9f5e1929232ab1839adf9ca3df8bf9a1dcb0075db3c820731ca38511d79378cd2ca49d7fa2a7913529a4a3a5574db47c6d69c8e967d254091c",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}