{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb0b959a65d7d6a61357dc1948e32973913485fbd7a98244b3143f9b319f48a3d",
    "signature": "0x53b138993d8ade8b392286346a2d065fa8a24312a020c7b68529cf8dd02547457527707e0dd8a28c52faeb9475f02f52a870ed79b0f5412a6dbe7136862b3d631b",
    "signer": "0x33545d8F2f5CDF9ddB7F06ccE62892E17c56CEcb",
    "userId": "548199821"
  }
}