{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9036c8a45f58d3ce06f6b26d302a34dba96c9d3e947a29fbc2f969cfd6239ace",
    "signature": "0x6db7950020201a3b2418e88b8f2f19b251cb9f786901c8bfd0ee18d8e63350e95eace136ab8d3507208405ab127f60ec65f2a1115e13bbe15e4142280e709b801c",
    "signer": "0x539e3F5c2f507a2fC1050ea3Bdd505FDe98957Da",
    "userId": "80883344"
  }
}