{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73387",
    "entityType": "User",
    "nonce": "0xfa015fff82ed6aa0410022d3581e89d449d48c8f79773bcb3e8e386709287e9b",
    "signature": "0x6fb7cb48e7066fcb9f5723da6859589bf50d2434224c34b1e845c9109411554525f54c75d6405c368e40974054e675a4afea542a64f1150183966854fb9a51861b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}