{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x798fb3faa9ecfdfad193aaacd97f8c270af88112f2d0ce3270ca8b2e49fa89d0",
    "signature": "0xdb6d3e75609568fe349b66bda039e61d2b684d8ba5a2de566b96a5276c63bf43285cf0285d48fa0ecbcf39544cd668e98bf881fea00a81092dac29f7b4667a2e1b",
    "signer": "0x88ad765B72fb060B3adbae1FA44A6C64722E1781",
    "userId": "236177"
  }
}