{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "720251199",
    "entityType": "User",
    "nonce": "0x8abface26bbe4de83895a40d77cb71b3df5ea92aa44b2c5ff978ce27d8cd77f3",
    "signature": "0xefc5d6289bb4c9baf0b5ca9569a6831f9f68780877121f94fd553f563452d8a33cabaaa0b74b882fe477a5509404c5bdeec355a0cf7410e41ad226527c0e32ce1b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}