{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x70d471445ff06360379b7513b1571d19d9ff62f117d4f76dc5feb7f3cfa82dd9",
    "signature": "0x64d3ca44e3d42904278897891a6b48a9bf4bc45b0c7b182a0ff2dc9fc1e81936567bee001b81c9835340d1cf9262e9a55013a1163e9e1d495b8a157329fe81aa1c",
    "signer": "0x8D25bB22ae062517A949bE42DC902b72e919128C",
    "userId": "140169796"
  }
}