{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3655ad810e5d01d9510d3c0ecb462c2f7393b33bf18881f9daf0c0ce14688c70",
    "signature": "0xec3a8c0fc867c55b5b1a91da3bfdf12463de648289b2437d57be36165a8f33671f9aac2d6360fba99e8848b800968e4118a5a0f34e65dbe65c93d64d48c661ad1c",
    "signer": "0xc6Ad7F06811d6A88C31184481367Ea3716C9EDeF",
    "userId": "600661494"
  }
}