{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe322202cc03558aa734318915aab25e356017a349ec482b7b2049ecdc1891abf",
    "signature": "0x3472cb1ead8caf45630da29cd5858e0f75cc28c28bf4a68a9a74860720e973645e31d92fd465f9fc80cee7f7a448650362835d806af9168b3672b95b0344c2691c",
    "signer": "0x6B2878936294DCEfb186B0793a0bA1b40d6CeE1a",
    "userId": "600177076"
  }
}