{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904230991",
    "entityType": "User",
    "nonce": "0x73a0cac168db5b7e6e379ce0e965fbc0b851208917a48b7798886728fe5693a5",
    "signature": "0x3a7f67ebe144879bd1d82ae144c62fecd3fca0a7d64191ce7766cb283d57558f646ac76da3e198f4a2ce4776f2a1bdd7e6f45f3153a13a70a3a29cfb332285191b",
    "signer": "0xb5d16B9ce655D8D4c665F349959e98cdF9F8b2F4",
    "userId": "840180689"
  }
}