{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672",
    "entityType": "User",
    "nonce": "0x6fe71c355996cb82d469df1805e3faf1548c92a80387f3c45ec9f8442dd2a079",
    "signature": "0xc6762547b79d9d47194dd015c69b68c27ee0ba02e6e0beda69da6d59ed0f80d53949cf51e1e469632f0c694808909aba9856b9e2fd6ccec8a8a037a3df1f68c51c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}