{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599653628",
    "entityType": "User",
    "nonce": "0x941b57f3e11aad6c6393375f8ee7a9dc1f85b4e330eeb8692b3146c3be94c13a",
    "signature": "0x8ceba35e76f504becff48b59c404eaeff7b8fb81e6acdad0135cf10ebce358963acea13229cc5a543d30429315f2f2811085da2aefd1612fa763a018dba074771c",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}