{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53513",
    "entityType": "User",
    "nonce": "0x6661c45ccff0485ce609421ac131995ecde66020d206ea4bed8aec833605ce4c",
    "signature": "0x5a0a5b1088775617dfd1d1e909fe614fb53758260b11a43b5de8cb24c46490c77d203e69e5b71366fd8ece894cb56207bb78ada2b78d56a0265d6621a917d3a41c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}