{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x82d738906b17454332b88bfcb87971ed12eb3f2c5614eb616f0902e532e1c7cc",
    "signature": "0xbb0d933f43cc414f3d4f0bb9559f83f23ba4452e77d15c8b91ad8577ffc5578b0357deee944ad36f6d4ba44f595e31061a9aef991f68efc0ed7b72b2c1d54c621b",
    "signer": "0x9DEA1AE3D3aaeA0666Bcb201199F84A419E74987",
    "userId": "517890895"
  }
}