{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50097",
    "entityType": "User",
    "nonce": "0x0b408ea550a1e39bfb2791b27ed25cd11dc014de09a1934020c002647da6c2c0",
    "signature": "0x3a709520377e66b121fb30e4f09ca7d85db15c5a297c41998a1117d1ddcdb88f2d69b5043a793b30382dcb9a022b93dc4f66cf8b5dc5e09c655fa65e8d2e6b451c",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}