{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "107719",
    "entityType": "User",
    "nonce": "0x8cef8e214b0646f9a3fee834302ccf0826aa2833e1b00dca0d3347defc8c9ad2",
    "signature": "0x591406867b48f29b6a8082fc740873630f7d365483057e96870c745b5ca4837c264e5d727d71336c4c0c8b0586ff311c55cca9b33b5b0c6c3a1b803cbe2deaa01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}