{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd21daac0e3b08fd8f8e2579405adbbcddbb71902a428ef9e3c2d8a0a915c7c6b",
    "signature": "0xe6ff6c6fc2e67ea2c78e771af78aece4fb554a0fa4057f3a44ffbfd3fd28c317205f99fb02a39a9c08d6964b36a2bd7d57f89b15bba82ce9418c67401c14ea4d1c",
    "signer": "0x47f9532Ae132f81E27133650Daa5224B50507766",
    "userId": "218431934"
  }
}