{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200218",
    "entityType": "User",
    "nonce": "0xacbeeffd194bf1b2fcc953359a12ff909c172f9a35838101bde68e46a8d5dc75",
    "signature": "0x0ee3671f94aeb6c93fedefb31cdecd8905da160dcbb8528b4c0c0b06232eaadf3063134e7216331d8c52dfa27a7895615be3b6d53319675eeb7a907c6c6b720b1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}