{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15450",
    "entityType": "User",
    "nonce": "0x33cb365be69adf4bf0e2cbde53d7e83b014ad1ff405d3f41c85a0ade49048c6c",
    "signature": "0x1dd8d84d6102e50d8b248b6935cd5cb553f8185df3e8d154a3f3f9f32e401ad432a6e2c98695bd1fba8146fbb1501482f98b3237c452d7d803bdf2c4cae2d5321c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}