{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1866428",
    "entityType": "User",
    "nonce": "0x3831e0a4bc1960553dff1e7c951991aa6dc5840218832f3adda1f906e650da72",
    "signature": "0x6d55022f0f7a7696eef10d648e44cc11ced9b498baebc2d101bb21f49acf1a7a5f43e2f46d23e84688ebb077ef4ad6b4e46c04409bed655d438dae2f6ca2646e1b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}