{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451684863",
    "entityType": "User",
    "nonce": "0xb68fd64a5809aaddd334181fcaeb5618e83312bedb760c01629b1cec82507221",
    "signature": "0x9bdcf8c350560d46b2006f66d0433aa84d59877ad86d37499f6a57934f8e285d53850672baa0128dc8d522c35906f629b43fc36fe1effbc1867dc9a0536b13701b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}