{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0xa51a4990904e45d3b2fc12aaa921760ac2bbd951601acb54648e7b30c7867260",
    "signature": "0x20909c913599ab1f3962238d03a9a983070836930dd458a7a75e64b4cd6a50b16cae720f120e7bc41bb2ac91311441e4740bfcbf3d6cbc0a1a0bb417ad0219001c",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}