{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9d8204e2f885cea1b30d3087f5f2d5bd76e8a34255ea8fd99ccfe6d6376c5aad",
    "signature": "0x07e0271464bb59ab805dcdf574b84534cff031135cf92ea1a37da6b9d1600b780913c1414f3cbee2fa7d07bdc1a90bf992c111bb19936e06248439832dde00c61c",
    "signer": "0x78d069B041b8C9548De1A9B62649c472a546D37c",
    "userId": "689962522"
  }
}