{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320009",
    "entityType": "User",
    "nonce": "0x204e278a40614df12d891a6f28fedebc4f7131a7e4693b39718e6486504016da",
    "signature": "0x1b44202ab0d49e966f1fe3ed2b7b8666ac04e165aeddfe4c8a5e4aa4e24937d61737ca9eb2a8e33e86761a71d3b4dad56f521be18e1ebcce7ba9e86e79772d5b1c",
    "signer": "0x9f5896C078219d89B9A5D8B9C381b7be8BEf4CFA",
    "userId": "56704236"
  }
}