{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2713",
    "entityType": "User",
    "nonce": "0x043ec380e8a710460ff7024407a93886ff142f43fa26a784cb144ff9df88af90",
    "signature": "0x8920942f5f6fc0bd4f9f333ff36922882c4c7d5194dad1b344c41d4b986478676394b6bfdaa1445adf5a95fa40df35ed67f443d8de83b32c0674bc0300347b5e1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}