{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x202b228b7597b9a5509e8a355bf4750903e7bdd63069ac4bb8581872b0d24447",
    "signature": "0xc3d6e6edfd04e106c26cd1e5372c72e885b2cb395d393155d689e6cdb095ede036015a700154af21b5473dacd01da318388f9675b741e8520c45a374e73504341c",
    "signer": "0x5d238528E1e94f22BedA3094339415b8B6057212",
    "userId": "70222728"
  }
}