{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0x6b500f9ddb7cfce84d348c62593251633c184dad94c7f9b212da1c012f7c1c1b",
    "signature": "0x9aea7436d387fbf2a8313fe8ff36390936bdf21f069c9b600c7147a86dcb9c8c4fef041df9f2210ee9324a40a7700bfee80e1af0ddb1b132943547998e6549a31b",
    "signer": "0x3B72fa667D52755CcB53B3815f3be52AD038A577",
    "userId": "211024156"
  }
}