{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5507",
    "entityType": "User",
    "nonce": "0xbcf9529bd3ead827b35f28d72ad8a703cca2f78c9857ed7adb53d64f4e46620b",
    "signature": "0x007d762ee4f479ed11d58002b2e829fa06a588233a41e273d155012724583d222c3ab3b3cd7787c7a3a369e6fdef00388d41bfb191a44dbf11f6e1ee3df64f451b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}