{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x343a912f431e8880eb0ab19aa918446f59041629e5fb718b5b3fc513ab804524",
    "signature": "0x2610642c41fb4ae9d6c265e4ae776ea50617ac6f96cc7429f994f8cc4931a3dc0e77e2d2e0d33cc30e615116ac6e424cbae0db93077c48cc602485d77e37c0281b",
    "signer": "0x009aa7b49eAF9a76b4b0e1D3C0ef92ba4e8ECEa4",
    "userId": "350390967"
  }
}