{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381647",
    "entityType": "User",
    "nonce": "0x18ca7bb689c0d94992219e46d19d1976bff1361dcfc008cc29797cbe362d4f47",
    "signature": "0xe30d67d44e642243b349b1cd4abad18a7905d6607b515ef18b84dcd6264305937fed60c4e771042412c869a6538f39f0e0b509853201f2f63ab125c1da394b011b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}