{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c747cffa2927342e349caee894a0ff64e975152bafcda1382d49ade89a55e13",
    "signature": "0x4aef1ae1fed4eba8ef109c2476e35a7b14289d2c407df8ca3053253f6c553b0e784491f74ee3ca0e401c298b65079971f974f06cc07647aef9b43738dcdf4c271c",
    "signer": "0xbA3b8b40E01e91bCCC95B282Ac3C7296EBFdf5FC",
    "userId": "457584438"
  }
}