{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28160941676ed5d5aa52dccccde83f7f73cd180eae3621a5bba77dfe08b5475e",
    "signature": "0xf6e2de4662a1e63a734adadc1265d75525e4cdfef52a09a261c14b2d785dc444026147a018d1b412ab83fadaeb8dc1c39a4de716947e24a878b07343a82c0ee31b",
    "signer": "0xC8ba555BF310bf99D2EbfAc4B8D1B54B47070743",
    "userId": "117784856"
  }
}