{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "686869198",
    "entityType": "User",
    "nonce": "0x897780620b76acdf7d998b3948bdab10c5a35f81642d5eeb658c6bafaf0f7c35",
    "signature": "0x818da5564ad235a887bc66a424db321062566a1881e820f70e72f74ec6dac6214cdc06f5f59e15b2a7b682aa4a86863d8147e99dfe648dcf76ed069cb67e4d401c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}