{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4e8c696a8b885b0fad39cfca19be17edc02af091cc25f75a3a9722499735f05",
    "signature": "0xf580c8da7d7dc48490318792bd38c8d8586666df2ecc301fb04a0a1a6fe101ff719e86fe97e6cf9973bdd5eb81a37e8c746ee244e49eb131a74ffec6389eeb5d1c",
    "signer": "0x6c5fAE3F9F4ecF2897DFFdc9Fd64EA7B2145a53f",
    "userId": "567122624"
  }
}