{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768479471",
    "entityType": "User",
    "nonce": "0xcc987047e0a1cad0390f262f2a9d6e3aa047ec1546758dfd2f925e8fa1729226",
    "signature": "0x1b283c5e0d05e8d2ff22818869c96cb0889d70b26d299d7ab17a1d8ff90bc946496bb40a07f310446630fa591890e3f27c53d5d08734acfb3cf6fc8481ce91e51b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}