{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138734",
    "entityType": "User",
    "nonce": "0x0155524c38ddff5309c254c7ff2e1c91c5f9a87754b5ab91e83af91f4f40cc90",
    "signature": "0xb90f8b08c14e70a2cb41b5431387b892077cffeb3a9790cd694533f1ffa600656e04834ae60704219d883b732f657628d8e730daa6fda470f4ca7fb27a844e531b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}