{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x818f133bb2dfd6bade98c91953ed228ced2237ec5cefbde0d750a702d5fe280c",
    "signature": "0x8e7e2a04b628fc534a9e47aa12441f22f9b4e18e9cba3bca1b91ad04f6bfa7d346356577987d963a28e8eef982cbe05b06f6f102e19ceddb20e76d7ad1eb6b6e1b",
    "signer": "0x9C79C675073c772C6fA83C1304744116cD91BB0C",
    "userId": "411851105"
  }
}