{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x405ab516f4255a5f44b531c1dbd77db4a2de749cf59381fd0d111637cb029fec",
    "signature": "0x0a252379027c9fcdbbd4df24474b1d095258e5e398fa5d64cc7496d0b213ad8809b5dd4e388b2d2128662a3e03ef219f9d112d395cda6530235ad4a0c721a3c81b",
    "signer": "0x041263f2CF3f62Eb0BBFc48804443e54483E2A9B",
    "userId": "602199524"
  }
}