{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "34778",
    "entityType": "User",
    "nonce": "0x50c91660f673933a2424fd9c8abccfd9c742417f3887b453d87374e0c9f24e8c",
    "signature": "0x10c8723d119795af5db4e312a849c1e1eee4114050d8443ad56500cc250476e5797fe44d93aaf9d3293ab9cdbfa054816cd7f495fbad81edc212f142aaacaedd1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}