{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313481598",
    "entityType": "User",
    "nonce": "0xbbb2c18a9f422045de925f1173ec8c3774e3e07a1a7511431d380fda57505e70",
    "signature": "0xaa9dba9d1cca659d22a158369185281ac9818295e800b80731d1cf2b3f082a3b2cd5494cd32265002f9f7f92caa5a001619eb568d2eccd87a47fd236a6d1b7ee1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}