{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298654375",
    "entityType": "User",
    "nonce": "0x43361e4ed37166c50d83b1761a9d9e2d8d956e4ce792e0c713832de6018cd806",
    "signature": "0xeb51a4fef67542af300eae09c2fa7773492bb9191a8e672cde4a480df864d36e5758ecf915c66370e103b240731cc9e351dbc453bb0d0ef2b2aa2ac339be21bd1b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}