{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x527db43f2962588bdd78cfbd61b6175daed2e6e22e2c633c4d755d71bb381d4d",
    "signature": "0x181456f3d43240a7a2ab24c42bdf6b0882acc3c00e26244dac4e53a369761b8868d405a38b561054521f1d260e1cc0a3545752f04bfa887122693ddb5a43a96d1c",
    "signer": "0x7Cd25769399a3c0928125396a2Bc231a2Ef98f8e",
    "userId": "357568342"
  }
}