{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72534",
    "entityType": "User",
    "nonce": "0x6d1402d94b381ff30fa170679d95deca1b586a1d51c53eb37d6a4b3fc83845e9",
    "signature": "0x4091b8628acd71f1dc7a4ca79a033f665861410bcd3cc856217c1de9416008a337cda3d0f7661d124ede1b10954bf9490dd7b5a92a84b24e0fefd24c12d550b01b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}