{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372694271",
    "entityType": "User",
    "nonce": "0x57f6cb6b21cfbfe3741c2a45d63f3eec53fecaafda3b8ca749474fb9c94e569d",
    "signature": "0x1bbc73fb413317c2c4dab915cb87699311f275a69ec2b7d4b89d1bb67865004b476e683d75c2f599bdb133fcbea394ff355d4383602716167b4348277c75a0241c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}