{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbfce71732aded6940795f0b2cbd4374122ed720e26ec62ae36bcaf02fd55718b",
    "signature": "0xaad1333560074e31b138ca9bc533b6709b73b272d6acbc689ee99b73ede27c027f185e6380969e384ad09894adbabed51d90cd57bb039ecff0a13835bd6ebea41c",
    "signer": "0x66F5a69fF2367fbB75Ad87374c17e3299C02Ee22",
    "userId": "224201098"
  }
}