{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "710763",
    "entityType": "User",
    "nonce": "0x124c002bc4be93f0e9f06fb19e594e593787b9c278625a80ae29e8727825afc2",
    "signature": "0xcdf6a503f43b10d9f9eeff6cde25e896ea9ed3ccd20b14e9699e00147fc1ab7705596e0164489db7af64526ae944747698ddc3926adc4420fda14760aa0d2a341c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}