{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "669106803",
    "entityType": "User",
    "nonce": "0x4766851fd061f84cf3aa78ed0246ad309d84ccc2143ee7206d12bf643d533f5e",
    "signature": "0x2f2887bc9d5824227bf1321e34f6e25febd249fc9e733f5a95be5fc508dffb3503da991f5d12f94f6831fd4bfd79085de533ca65ace1c6179c15b40704ce85031b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}