{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x237723a6a7b89db5c0fb34a2350d23a6ead4e8c6c4fb5e1db179a074956cf3db",
    "signature": "0x849abce81228fdc0898bb90f8804b4391f614c1db833b1cf91df576e553831c81d18c1f9e161e254c4bdac033f417e0aa5c068125aef61b64a57c37c8af20d2b1b",
    "signer": "0x339Fba6F655c03B4FBDe23334784B000e4969E03",
    "userId": "50519379"
  }
}