{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3fadca3f47e1819c6ea5761d864195938d5da9ec760e0c0c17b60fa52db69f8b",
    "signature": "0x6ea63af300d54311c5a9526acfb82f0048638af440b5a2141c9017f9743fbf2050801f214d609e413fe8c405dbba3c53f17544f566186013e8b873cfdc159f751b",
    "signer": "0xD421e37d15105099410eABCBa242D0Ab3E985ab4",
    "userId": "807549804"
  }
}