{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253360517",
    "entityType": "User",
    "nonce": "0xb1c0ddcba48f21dcb6701b8e5db2ae5c9ee7c6fe1783e22e08f4c24310f05a15",
    "signature": "0xc9dc67515394865898a402ae93fc9e9a285527574f3641aedb1f0c5098a7b469284dae5fe09c103df51a3c40c3fbeca9d487f62d5ef66a7078ce9c2f943c7a271c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}