{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "868248368",
    "entityType": "User",
    "nonce": "0x29f6246ddc0258ce6fe7ae8982b071f7519159bb3b4406658696c1d4ba4d5e3f",
    "signature": "0x7d0e3abaeb2d316727fda3a3be25d944a5378be357f99cbe51f60e846728daeb2b4850868acdc3c70e4a490044499b2e12c51322b757f6e1fdc0004ff36a9fcd1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}