{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37892",
    "entityType": "User",
    "nonce": "0x2e70a4546ed67b1e4707f294f29e11c808808b139fc7de03ca2c204bf1a303b9",
    "signature": "0xb8b1a181ef4f2a729ca7429d5cf2a64b101a6b371f187a76895672a4188967006b349eb3fb1c15e0b9e80bddd09c79866a88781f9f31372b87bb61f253f07d011b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}