{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5f20ca77655bf3fe6916f9f060798761085fb08f22cf7d4fa29262cf1d6abe87",
    "signature": "0x01d22e66ee2a2e5377ad9c0af0b1ef3bd75ca0031b168ae864b83f567e054e9d10167fd1f5df77e1bddd809de8447d1eb3550404970408b45f5e8c3d058a7b4c1b",
    "signer": "0x68833ff261f5D2053c7f70f344CF3317811fa1A4",
    "userId": "701658804"
  }
}