{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345112",
    "entityType": "User",
    "nonce": "0xcd4927f317a9ed77a5f5bfa19341c2508765b456cf54aecc950bd4e54781caba",
    "signature": "0x36be8eaae6e3d11515df7257a1acaa9b15da440240bcc87b3972c9480835ceb3295c256b0375115f66b00159e2a80c3a7a76e0e35929fb8b0127afa15062c7681b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}