{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x00904c22e0a44af015896f18faa52f2a885c1bb655f7e7f68485d7af6667244f",
    "signature": "0x47668e41b94c765b1a1e081997624d5658164dbb71e5f2435412986e2a0d65e5447f443512d0d33e4bf77e743ced0a533613752af9874fee90bab85da51c702f1b",
    "signer": "0x37899ea1eDD5e352474bB3bd746A3F0C95654954",
    "userId": "697539021"
  }
}