{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1bac2c42e16f02e3dcd19ae416d264b8a1ba143558e71c32ccf7b8be05464761",
    "signature": "0x53281c2f92540f2c2d00d380f052735b9271ddcd7f4baa4f31c5afc8663d39734d27504bc84a7b95ea7ca3e7a3506e386a2440eee437d13bf98bd341f11645951b",
    "signer": "0x009aa7b49eAF9a76b4b0e1D3C0ef92ba4e8ECEa4",
    "userId": "350390967"
  }
}