{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc7ff40ba23df2932d4302458bd723f78ec8da4b102de97168b2afe32014e0c92",
    "signature": "0xfab395601fcbe25395e5c64e2ac7601aa273d16f21d2f39f6195a14914d4964075254e74ebecfd6f4a79104f89f83971a312483d436066758bd4324ec6b538af1c",
    "signer": "0x8bD50Caf0D290982E2705EBe89ED8fDCA620224a",
    "userId": "392289893"
  }
}