{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "104731",
    "entityType": "User",
    "nonce": "0xc121220bb00c2bffe09af2a654aab260bfb10dc55408166e775081ed394b0c52",
    "signature": "0x7ba08ad65b998861ef297e57eb3098645a44a3dfbfc79e1d32f5e8bd5622f56453c9a827d8a404ace718cbd5401e15c9e578e18ce57aa4f496697dcda20fc0801b",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}