{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309200",
    "entityType": "User",
    "nonce": "0x857547c24008227bae5cd4abbb0b63b391f129cdf055b03f9e733624531d1612",
    "signature": "0x4bde6104508fb23e5aeec0f8120fa5deef6075e30519a07339b39fc7c5d24aa34f09ac9bdeef5aa8f36d20991cb8e04041509249bd3a48fcfa45c56ff9cf0a9e1b",
    "signer": "0xCe4cca6F46758250714d4392CA3a7D22025C6320",
    "userId": "320839"
  }
}