{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374065034",
    "entityType": "User",
    "nonce": "0x3da0eebe3f631cf36694806731e968269460a0a0dac246fc3ff09fdf77a6528f",
    "signature": "0xc09542de268676ae80f9a9c0da7988018359e6d9c3809cad9717b95a3a0b72a41104d952e7483ea3ee251dd0745b1fa7b71b9c7756bdf27071ac0c904dd0e2771c",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}