{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "80538",
    "entityType": "User",
    "nonce": "0x297c2fbccb50a62ccbcc3b3fbdb92090dde08eddce78d213be6474b0090a4ba7",
    "signature": "0x866c1efddaeaa3a14179c71e48f88dac5aafdf98e774d1b7f237b19e2465cdd218c304a7c71ecc2d8029ed4e535d6daede1aba9dca55bea88e63c1cc65830dc21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}