{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12218",
    "entityType": "User",
    "nonce": "0xdec4e21c064c505737b2481b0bbba78146ba8505674c4e270c1b56c6bc85feb4",
    "signature": "0xc62c8c5a423b127d4ac5c6f21923d9eb94c6d1157c06c70d3b8172dc9b9238dc471303ace2ae4ebbb9eb9ce36028ed5555c4b5b19c3e6c8afe6bb8f0e7b681941b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}