{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0xb24c21aa3ad778b4a556dc637c0df1fdcafa89d4295c64b89af7497765321512",
    "signature": "0x95d90b1286426ca78bf874b9e3a7270592304a55691f21bb1fc314a4a63a4e3e2b9ef9af07fd5e420d3748688033eeb2cb68f5bc0c9fc93553fda5eb4ae37e151c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}