{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc0ed20f14a70ab0de8cd32222b5d247949c29d26f41d31a2d567264937421642",
    "signature": "0xc8cc90ca25ec3ee2a63f5990cbe3a27d2f7c2e11df30a14345285fe410aae1717253b5fcf2e5652f9f0370755b58322e8c840a3e88d0ca3853aeb8a0f82a0d291c",
    "signer": "0x50F56216DA8F03152a4D4F208E608Cde28d53292",
    "userId": "88043521"
  }
}