{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5754",
    "entityType": "User",
    "nonce": "0x377c03552238273ec7238aa9b459474cfde576b4973a7440aab08c63fdfe2ead",
    "signature": "0x25935624944a06569754530caa1beb01a2130fe3b7f28fbafea5405647da8fe6193ae40ce808fc7e80b9d4276061d1fcdea17e9b35203ecc919065b289299d7b1c",
    "signer": "0x4820e0CcbDfCba20d6E83A492D072155Fa05519c",
    "userId": "360674722"
  }
}