{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774076",
    "entityType": "User",
    "nonce": "0xa72000bd778d00b5d1ece6a47851295dcd1fe8425f5886e26f1571d16d22a4d9",
    "signature": "0xf377e63840abea53e12a848117e0213a448b1725282010ba78a7477d55aebaee08f31cbe40eea9b15ce7b0ed3e539b8e02eaa00d9377fd994f9c91f1d69bced41c",
    "signer": "0x2Df83D15c880275a0138820cE2009Fc85eF32C65",
    "userId": "107618708"
  }
}