{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390",
    "entityType": "User",
    "nonce": "0xb077b1e4ee89196064399f4fb6ad9421924203f7be485d764fa44ff53a850bf2",
    "signature": "0x40df3238c8cbee05addac438d3f46af8d2fe2ce347b465676497e580134086ae5142508ea4d3e765cbb9a9c9f84d2839127936e35748b52c80e090583a9716e41b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}