{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a033b6093dd4f3eb39eccc62f73441ae3eb1a0911e500b936ae0f14d0e45066",
    "signature": "0x5eed94a31909f1a07e4c40ad722d7eff6e7ce14cb2c6bb82cd6ac3a16f9ab5053ece2db76a929a4f2a82306513701f0d4868038eb9cc4703425a54beed21f4681c",
    "signer": "0x9aFEe643DbEC07Ca709990bFFba18669AE933e81",
    "userId": "799343570"
  }
}