{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987216334",
    "entityType": "User",
    "nonce": "0x68d8a144588d51fc5434b8bcb219e8565d0f4195035613010e24b0153d2b083f",
    "signature": "0xda166a2ce79be8f77066d5d3f097e4a452bce6efd357a6d71995852c5367c34333765953f31a5375016264d4a8fbb2a50665096e746e2198661060736aa5ffaf1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}