{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51319",
    "entityType": "User",
    "nonce": "0xd2cdb97acc437abe5db3de7cd6a8d94f2ff5409522334eb2c4b059d2926d3625",
    "signature": "0x99fb9c8fce28b4d31339d653526f52e771d3c83f4cf69ab7642219a7c7822d6415c663d5b97adc9731cab8bb887c6ce76c53d81f5deb88d56387835baaa387981c",
    "signer": "0x316933E449A0b429014E405447c447C9Bc472bE9",
    "userId": "451684863"
  }
}