{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0x9a5e5b495e1b5f6767bc417dd3748550e392bc374147f648ebc21fd200b855d6",
    "signature": "0x403afd71258bde05709953537b4c3697823bb163366a8bab3172f9f4dd7318d564b9451494f2a97923d1c8d9d7f0fb33a0c2d5f276137759ef147489699ac2d41b",
    "signer": "0xD07A680d4F48bA7Cc076c23f40870AccBbad1987",
    "userId": "16411799"
  }
}