{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51842",
    "entityType": "User",
    "nonce": "0x7e1870feab22be490618158c5b4ed374d543733692951ec2e4999fd6cc9089ae",
    "signature": "0xfcb55a8db7aa877ce6e1213b0bba103b3fa73cff9c9c84f6f3ea0b14553563f87d3bf8c345acdfe9a9d6ee6d0134b6a85f8c1a7064ef9e3b87d8d713dfbfc27e1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}