{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x222dce16797fae837e0e698b10f25e6c89c7d8e721073a69c243ee353e6243a3",
    "signature": "0x3e2ce69e4a91cc31c37bf74b648b89d62799b250425f3bc9ab23506bdddd2025082f2d9732c725a4e440d9721fb1a2b0c7ee5639f2189a1bffe576720820cf441c",
    "signer": "0x5823e56644991c5f5f29870830175996Edb011c0",
    "userId": "433764837"
  }
}