{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120168",
    "entityType": "User",
    "nonce": "0x4ad065ef330eaf76e84fc45afffed9f07a1a0d20a8217b3d625c854dbbdeacff",
    "signature": "0x7481fe23744b64eb74094e00bc0799641d56146a687bb5281b5fa7347aa005fc7a2f94b158b402b150f9ad92dd6084c3300fcbabe6c0d943699615640011cc2a1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}