{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257431",
    "entityType": "User",
    "nonce": "0xacd189725f040e3ba95f2c3953d4b29223151c9787c9662244c52f92fa6737b3",
    "signature": "0xa511fcd2cc18f015841a6749915e476af0fbee4f64e240f1b608294a6b07135e7926721e36f251a68d54c79485986f366e201cc63410030ad03fdcd3941f6f0f1b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}