{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12853",
    "entityType": "User",
    "nonce": "0x45b8a70218e261035c29b712976994443b96a4e5e87b61b704e180aefd85effc",
    "signature": "0x42017aab4992e804dc9e65f6644fafb52022913f43f68a04a231fd5308cfb9203af52ffeb272ab18c6bbab569b7699d07024ef7a0bff747f8c04c162c9af9f051c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}