{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77604",
    "entityType": "User",
    "nonce": "0xbac3f7846cf8c4de2a5ef35abc7f9eb0a0bcec81b144931d512caa313fd3b5fc",
    "signature": "0x74de3bce25bfca9edfe2398f88084fedb4df7bf4b63a1c12a88103bfa4ff6d320916d29582db43b226085fdf29f7b4c9ec880a1558be6bd110117e9ec92938761c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}