{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148293",
    "entityType": "User",
    "nonce": "0x336064306a3c4d695bfce90a6def73de38edb7372df02c18c8e4f440d8d7c6a8",
    "signature": "0x5c955f9d3a58834c74168f841a02d6e95a79c52d6e23dac4b71f63b1f1e46bbe2a10e351194d66874d762e99c5d60ff25563d0ffb999e053c76716264c83c1c81b",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}