{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8141",
    "entityType": "User",
    "nonce": "0x1b363fd468aeedba5b363afd5bc7b25c13fa02c09b3d836a1d251c71a4046705",
    "signature": "0x60db125409ef7d13a0130691a8934aabef3cdee6aad04bbb633ebc621a3836cb31dad610e74ef399e5840e7993c8b4620faa65bd585e8f40a58a4b20c84ca7f01b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}