{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x30947a4c1460846b412fe94813367fd0271e4c8c59d693d208b1bcb3591f968a",
    "signature": "0xb7eb5d5d9bcb3f015e64066d1d2a8731c565e90cdd5225c059434aa9bf945c0e4d1e238df277479e35c6c0e8367e8a468b354d6a371bcc96c55eeee01bfb03111b",
    "signer": "0x71527791e60Fc75cC5e5CfCB4d1e0d873986464b",
    "userId": "405958659"
  }
}