{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187530",
    "entityType": "User",
    "nonce": "0xa055f4c5b312c06c9588317dbf3fa6525db0ceb749eec26661c79d618118329b",
    "signature": "0x58cce56e3d4a68cdc60c809cb086f59dc4f209c801d5ef0aac6662e52f2c06ac3bc7a59e1c5a8d9443ad51074edbad2f62fb747c596d18d9cec643a2607fa4ed1b",
    "signer": "0xa50fD00015342B99d1B27C62f6F4a1cC0A20D53E",
    "userId": "72975"
  }
}