{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308850",
    "entityType": "User",
    "nonce": "0xd363a8b5e1e8dc6a463bfca1d0350a751dfc2fb1e9ec7ce7adb03153b2a9f4c6",
    "signature": "0xcb83c286ad1cfdcbf913ecea1881cb05733bcc921bf4ad81aade2e0846617fd31f34fa4f76a0adb96e850b5af446b47e5a97392759b5251bfcce383f58b704f91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}